diff --git a/yudao-module-ai/yudao-module-ai-api/src/main/java/cn/iocoder/yudao/module/ai/enums/ErrorCodeConstants.java b/yudao-module-ai/yudao-module-ai-api/src/main/java/cn/iocoder/yudao/module/ai/enums/ErrorCodeConstants.java
index 5ac6d2ae9e..2b236e6f6a 100644
--- a/yudao-module-ai/yudao-module-ai-api/src/main/java/cn/iocoder/yudao/module/ai/enums/ErrorCodeConstants.java
+++ b/yudao-module-ai/yudao-module-ai-api/src/main/java/cn/iocoder/yudao/module/ai/enums/ErrorCodeConstants.java
@@ -60,5 +60,6 @@ public interface ErrorCodeConstants {
     ErrorCode KNOWLEDGE_DOCUMENT_FILE_READ_FAIL = new ErrorCode(1_022_008_102, "文档加载失败!");
 
     ErrorCode KNOWLEDGE_SEGMENT_NOT_EXISTS = new ErrorCode(1_022_008_202, "段落不存在!");
+    ErrorCode KNOWLEDGE_SEGMENT_CONTENT_TOO_LONG = new ErrorCode(1_022_008_203, "内容 Token 数为 {}，超过最大限制 {}");
 
 }
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeController.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeController.java
index df49395750..f3dc6f022e 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeController.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeController.java
@@ -13,6 +13,7 @@ import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
 import jakarta.validation.Valid;
+import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -30,6 +31,7 @@ public class AiKnowledgeController {
 
     @GetMapping("/page")
     @Operation(summary = "获取知识库分页")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<PageResult<AiKnowledgeRespVO>> getKnowledgePage(@Valid AiKnowledgePageReqVO pageReqVO) {
 
         PageResult<AiKnowledgeDO> pageResult = knowledgeService.getKnowledgePage(pageReqVO);
@@ -39,6 +41,7 @@ public class AiKnowledgeController {
     @GetMapping("/get")
     @Operation(summary = "获得知识库")
     @Parameter(name = "id", description = "编号", required = true, example = "1024")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<AiKnowledgeRespVO> getKnowledge(@RequestParam("id") Long id) {
         AiKnowledgeDO knowledge = knowledgeService.getKnowledge(id);
         return success(BeanUtils.toBean(knowledge, AiKnowledgeRespVO.class));
@@ -46,12 +49,14 @@ public class AiKnowledgeController {
 
     @PostMapping("/create")
     @Operation(summary = "创建知识库")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:create')")
     public CommonResult<Long> createKnowledge(@RequestBody @Valid AiKnowledgeSaveReqVO createReqVO) {
         return success(knowledgeService.createKnowledge(createReqVO));
     }
 
     @PutMapping("/update")
     @Operation(summary = "更新知识库")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:update')")
     public CommonResult<Boolean> updateKnowledge(@RequestBody @Valid AiKnowledgeSaveReqVO updateReqVO) {
         knowledgeService.updateKnowledge(updateReqVO);
         return success(true);
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeDocumentController.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeDocumentController.java
index e828615ea1..cca856fe17 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeDocumentController.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeDocumentController.java
@@ -15,6 +15,7 @@ import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
 import jakarta.validation.Valid;
+import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -22,7 +23,6 @@ import java.util.List;
 
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 
-// TODO @芋艿：增加权限标识
 @Tag(name = "管理后台 - AI 知识库文档")
 @RestController
 @RequestMapping("/ai/knowledge/document")
@@ -34,6 +34,7 @@ public class AiKnowledgeDocumentController {
 
     @GetMapping("/page")
     @Operation(summary = "获取文档分页")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<PageResult<AiKnowledgeDocumentRespVO>> getKnowledgeDocumentPage(
             @Valid AiKnowledgeDocumentPageReqVO pageReqVO) {
         PageResult<AiKnowledgeDocumentDO> pageResult = documentService.getKnowledgeDocumentPage(pageReqVO);
@@ -42,6 +43,7 @@ public class AiKnowledgeDocumentController {
 
     @GetMapping("/get")
     @Operation(summary = "获取文档详情")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<AiKnowledgeDocumentRespVO> getKnowledgeDocument(@RequestParam("id") Long id) {
         AiKnowledgeDocumentDO document = documentService.getKnowledgeDocument(id);
         return success(BeanUtils.toBean(document, AiKnowledgeDocumentRespVO.class));
@@ -49,6 +51,7 @@ public class AiKnowledgeDocumentController {
 
     @PostMapping("/create")
     @Operation(summary = "新建文档（单个）")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:create')")
     public CommonResult<Long> createKnowledgeDocument(@RequestBody @Valid AiKnowledgeDocumentCreateReqVO reqVO) {
         Long id = documentService.createKnowledgeDocument(reqVO);
         return success(id);
@@ -56,6 +59,7 @@ public class AiKnowledgeDocumentController {
 
     @PostMapping("/create-list")
     @Operation(summary = "新建文档（多个）")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:create')")
     public CommonResult<List<Long>> createKnowledgeDocumentList(
             @RequestBody @Valid AiKnowledgeDocumentCreateListReqVO reqVO) {
         List<Long> ids = documentService.createKnowledgeDocumentList(reqVO);
@@ -64,6 +68,7 @@ public class AiKnowledgeDocumentController {
 
     @PutMapping("/update")
     @Operation(summary = "更新文档")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:update')")
     public CommonResult<Boolean> updateKnowledgeDocument(@Valid @RequestBody AiKnowledgeDocumentUpdateReqVO reqVO) {
         documentService.updateKnowledgeDocument(reqVO);
         return success(true);
@@ -71,10 +76,19 @@ public class AiKnowledgeDocumentController {
 
     @PutMapping("/update-status")
     @Operation(summary = "更新文档状态")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:update')")
     public CommonResult<Boolean> updateKnowledgeDocumentStatus(
             @Valid @RequestBody AiKnowledgeDocumentUpdateStatusReqVO reqVO) {
         documentService.updateKnowledgeDocumentStatus(reqVO);
         return success(true);
     }
 
+    @DeleteMapping("/delete")
+    @Operation(summary = "删除文档")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:delete')")
+    public CommonResult<Boolean> deleteKnowledgeDocument(@RequestParam("id") Long id) {
+        documentService.deleteKnowledgeDocument(id);
+        return success(true);
+    }
+
 }
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeSegmentController.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeSegmentController.java
index 06b61708f0..34f324491b 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeSegmentController.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/AiKnowledgeSegmentController.java
@@ -19,6 +19,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
 import jakarta.validation.Valid;
 import org.hibernate.validator.constraints.URL;
+import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -29,7 +30,6 @@ import java.util.Map;
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
 
-// TODO @芋艿：增加权限标识
 @Tag(name = "管理后台 - AI 知识库段落")
 @RestController
 @RequestMapping("/ai/knowledge/segment")
@@ -38,27 +38,45 @@ public class AiKnowledgeSegmentController {
 
     @Resource
     private AiKnowledgeSegmentService segmentService;
-
     @Resource
     private AiKnowledgeDocumentService documentService;
 
+    @GetMapping("/get")
+    @Operation(summary = "获取段落详情")
+    @Parameter(name = "id", description = "段落编号", required = true, example = "1024")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
+    public CommonResult<AiKnowledgeSegmentRespVO> getKnowledgeSegment(@RequestParam("id") Long id) {
+        AiKnowledgeSegmentDO segment = segmentService.getKnowledgeSegment(id);
+        return success(BeanUtils.toBean(segment, AiKnowledgeSegmentRespVO.class));
+    }
+
     @GetMapping("/page")
     @Operation(summary = "获取段落分页")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<PageResult<AiKnowledgeSegmentRespVO>> getKnowledgeSegmentPage(
             @Valid AiKnowledgeSegmentPageReqVO pageReqVO) {
         PageResult<AiKnowledgeSegmentDO> pageResult = segmentService.getKnowledgeSegmentPage(pageReqVO);
         return success(BeanUtils.toBean(pageResult, AiKnowledgeSegmentRespVO.class));
     }
 
+    @PostMapping("/create")
+    @Operation(summary = "创建段落")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:create')")
+    public CommonResult<Long> createKnowledgeSegment(@Valid @RequestBody AiKnowledgeSegmentSaveReqVO createReqVO) {
+        return success(segmentService.createKnowledgeSegment(createReqVO));
+    }
+
     @PutMapping("/update")
     @Operation(summary = "更新段落内容")
-    public CommonResult<Boolean> updateKnowledgeSegment(@Valid @RequestBody AiKnowledgeSegmentUpdateReqVO reqVO) {
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:update')")
+    public CommonResult<Boolean> updateKnowledgeSegment(@Valid @RequestBody AiKnowledgeSegmentSaveReqVO reqVO) {
         segmentService.updateKnowledgeSegment(reqVO);
         return success(true);
     }
 
     @PutMapping("/update-status")
     @Operation(summary = "启禁用段落内容")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:update')")
     public CommonResult<Boolean> updateKnowledgeSegmentStatus(
             @Valid @RequestBody AiKnowledgeSegmentUpdateStatusReqVO reqVO) {
         segmentService.updateKnowledgeSegmentStatus(reqVO);
@@ -71,6 +89,7 @@ public class AiKnowledgeSegmentController {
             @Parameter(name = "url", description = "文档 URL", required = true),
             @Parameter(name = "segmentMaxTokens", description = "分段的最大 Token 数", required = true)
     })
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<List<AiKnowledgeSegmentRespVO>> splitContent(
             @RequestParam("url") @URL String url,
             @RequestParam(value = "segmentMaxTokens") Integer segmentMaxTokens) {
@@ -81,6 +100,7 @@ public class AiKnowledgeSegmentController {
     @GetMapping("/get-process-list")
     @Operation(summary = "获取文档处理列表")
     @Parameter(name = "documentIds", description = "文档编号列表", required = true, example = "1,2,3")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<List<AiKnowledgeSegmentProcessRespVO>> getKnowledgeSegmentProcessList(
             @RequestParam("documentIds") List<Long> documentIds) {
         List<AiKnowledgeSegmentProcessRespVO> list = segmentService.getKnowledgeSegmentProcessList(documentIds);
@@ -89,6 +109,7 @@ public class AiKnowledgeSegmentController {
 
     @GetMapping("/search")
     @Operation(summary = "搜索段落内容")
+    @PreAuthorize("@ss.hasPermission('ai:knowledge:query')")
     public CommonResult<List<AiKnowledgeSegmentSearchRespVO>> searchKnowledgeSegment(
             @Valid AiKnowledgeSegmentSearchReqVO reqVO) {
         // 1. 搜索段落
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentPageReqVO.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentPageReqVO.java
index 8be3db501b..f53d5be076 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentPageReqVO.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentPageReqVO.java
@@ -1,6 +1,8 @@
 package cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment;
 
+import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
 import cn.iocoder.yudao.framework.common.pojo.PageParam;
+import cn.iocoder.yudao.framework.common.validation.InEnum;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
@@ -8,13 +10,14 @@ import lombok.Data;
 @Data
 public class AiKnowledgeSegmentPageReqVO extends PageParam {
 
-    @Schema(description = "分段状态", example = "1")
-    private Integer status;
-
     @Schema(description = "文档编号", example = "1")
     private Integer documentId;
 
     @Schema(description = "分段内容关键字", example = "Java 开发")
-    private String keyword;
+    private String content;
+
+    @Schema(description = "分段状态", example = "1")
+    @InEnum(CommonStatusEnum.class)
+    private Integer status;
 
 }
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentUpdateReqVO.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentUpdateReqVO.java
deleted file mode 100644
index 2fc7a3141f..0000000000
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/controller/admin/knowledge/vo/segment/AiKnowledgeSegmentUpdateReqVO.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-import lombok.Data;
-
-
-@Schema(description = "管理后台 - AI 更新 知识库段落 request VO")
-@Data
-public class AiKnowledgeSegmentUpdateReqVO {
-
-    @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "24790")
-    private Long id;
-
-    @Schema(description = "切片内容", requiredMode = Schema.RequiredMode.REQUIRED, example = "Java 开发手册")
-    private String content;
-
-}
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/knowledge/AiKnowledgeSegmentMapper.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/knowledge/AiKnowledgeSegmentMapper.java
index fab5572ceb..a2a4e15b6d 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/knowledge/AiKnowledgeSegmentMapper.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/dal/mysql/knowledge/AiKnowledgeSegmentMapper.java
@@ -25,8 +25,8 @@ public interface AiKnowledgeSegmentMapper extends BaseMapperX<AiKnowledgeSegment
     default PageResult<AiKnowledgeSegmentDO> selectPage(AiKnowledgeSegmentPageReqVO reqVO) {
         return selectPage(reqVO, new LambdaQueryWrapperX<AiKnowledgeSegmentDO>()
                 .eq(AiKnowledgeSegmentDO::getDocumentId, reqVO.getDocumentId())
+                .likeIfPresent(AiKnowledgeSegmentDO::getContent, reqVO.getContent())
                 .eqIfPresent(AiKnowledgeSegmentDO::getStatus, reqVO.getStatus())
-                .likeIfPresent(AiKnowledgeSegmentDO::getContent, reqVO.getKeyword())
                 .orderByDesc(AiKnowledgeSegmentDO::getId));
     }
 
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentService.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentService.java
index 32720ed6a5..8ff137b331 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentService.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentService.java
@@ -74,6 +74,13 @@ public interface AiKnowledgeDocumentService {
      */
     void updateKnowledgeDocumentRetrievalCountIncr(Collection<Long> ids);
 
+    /**
+     * 删除文档
+     *
+     * @param id 文档编号
+     */
+    void deleteKnowledgeDocument(Long id);
+
     /**
      * 校验文档是否存在
      *
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentServiceImpl.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentServiceImpl.java
index a04bf80221..b1513a9bd4 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentServiceImpl.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeDocumentServiceImpl.java
@@ -149,6 +149,19 @@ public class AiKnowledgeDocumentServiceImpl implements AiKnowledgeDocumentServic
         }
     }
 
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void deleteKnowledgeDocument(Long id) {
+        // 1. 校验存在
+        validateKnowledgeDocumentExists(id);
+
+        // 2. 删除
+        knowledgeDocumentMapper.deleteById(id);
+
+        // 3. 删除对应的段落
+        knowledgeSegmentService.deleteKnowledgeSegmentByDocumentId(id);
+    }
+
     @Override
     public void updateKnowledgeDocumentRetrievalCountIncr(Collection<Long> ids) {
         if (CollUtil.isEmpty(ids)) {
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentService.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentService.java
index ce79c8dd00..15ab941fe8 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentService.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentService.java
@@ -3,7 +3,7 @@ package cn.iocoder.yudao.module.ai.service.knowledge;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
 import cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment.AiKnowledgeSegmentPageReqVO;
 import cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment.AiKnowledgeSegmentProcessRespVO;
-import cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment.AiKnowledgeSegmentUpdateReqVO;
+import cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment.AiKnowledgeSegmentSaveReqVO;
 import cn.iocoder.yudao.module.ai.controller.admin.knowledge.vo.segment.AiKnowledgeSegmentUpdateStatusReqVO;
 import cn.iocoder.yudao.module.ai.dal.dataobject.knowledge.AiKnowledgeSegmentDO;
 import cn.iocoder.yudao.module.ai.service.knowledge.bo.AiKnowledgeSegmentSearchReqBO;
@@ -19,6 +19,14 @@ import java.util.List;
  */
 public interface AiKnowledgeSegmentService {
 
+    /**
+     * 获取知识库段落详情
+     *
+     * @param id 段落编号
+     * @return 段落详情
+     */
+    AiKnowledgeSegmentDO getKnowledgeSegment(Long id);
+
     /**
      * 获取段落分页
      *
@@ -46,12 +54,20 @@ public interface AiKnowledgeSegmentService {
         createKnowledgeSegmentBySplitContent(documentId, content);
     }
 
+    /**
+     * 创建知识库段落
+     *
+     * @param createReqVO 创建信息
+     * @return 段落编号
+     */
+    Long createKnowledgeSegment(AiKnowledgeSegmentSaveReqVO createReqVO);
+
     /**
      * 更新段落的内容
      *
      * @param reqVO 更新内容
      */
-    void updateKnowledgeSegment(AiKnowledgeSegmentUpdateReqVO reqVO);
+    void updateKnowledgeSegment(AiKnowledgeSegmentSaveReqVO reqVO);
 
     /**
      * 更新段落的状态
diff --git a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentServiceImpl.java b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentServiceImpl.java
index eefad0bc8b..adf1616cb0 100644
--- a/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentServiceImpl.java
+++ b/yudao-module-ai/yudao-module-ai-biz/src/main/java/cn/iocoder/yudao/module/ai/service/knowledge/AiKnowledgeSegmentServiceImpl.java
@@ -34,6 +34,7 @@ import java.util.Objects;
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
 import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
 import static cn.iocoder.yudao.module.ai.enums.ErrorCodeConstants.KNOWLEDGE_SEGMENT_NOT_EXISTS;
+import static cn.iocoder.yudao.module.ai.enums.ErrorCodeConstants.KNOWLEDGE_SEGMENT_CONTENT_TOO_LONG;
 
 /**
  * AI 知识库分片 Service 实现类
@@ -98,20 +99,20 @@ public class AiKnowledgeSegmentServiceImpl implements AiKnowledgeSegmentService
     }
 
     @Override
-    public void updateKnowledgeSegment(AiKnowledgeSegmentUpdateReqVO reqVO) {
+    public void updateKnowledgeSegment(AiKnowledgeSegmentSaveReqVO reqVO) {
         // 1. 校验
-        AiKnowledgeSegmentDO segment = validateKnowledgeSegmentExists(reqVO.getId());
+        AiKnowledgeSegmentDO oldSegment = validateKnowledgeSegmentExists(reqVO.getId());
 
         // 2. 删除向量
-        VectorStore vectorStore = getVectorStoreById(segment.getKnowledgeId());
-        deleteVectorStore(vectorStore, segment);
+        VectorStore vectorStore = getVectorStoreById(oldSegment.getKnowledgeId());
+        deleteVectorStore(vectorStore, oldSegment);
 
         // 3.1 更新切片
-        AiKnowledgeSegmentDO segmentDO = BeanUtils.toBean(reqVO, AiKnowledgeSegmentDO.class);
-        segmentMapper.updateById(segmentDO);
+        AiKnowledgeSegmentDO newSegment = BeanUtils.toBean(reqVO, AiKnowledgeSegmentDO.class);
+        segmentMapper.updateById(newSegment);
         // 3.2 重新向量化，必须开启状态
-        if (CommonStatusEnum.isEnable(segmentDO.getStatus())) {
-            writeVectorStore(vectorStore, segmentDO, new Document(segmentDO.getContent()));
+        if (CommonStatusEnum.isEnable(oldSegment.getStatus())) {
+            writeVectorStore(vectorStore, newSegment, new Document(newSegment.getContent()));
         }
     }
 
@@ -143,7 +144,7 @@ public class AiKnowledgeSegmentServiceImpl implements AiKnowledgeSegmentService
         segmentMapper.updateById(new AiKnowledgeSegmentDO().setId(reqVO.getId()).setStatus(reqVO.getStatus()));
 
         // 4. 更新向量
-        if (Objects.equals(reqVO.getStatus(), CommonStatusEnum.ENABLE.getStatus())) {
+        if (CommonStatusEnum.isEnable(reqVO.getStatus())) {
             writeVectorStore(vectorStore, segment, new Document(segment.getContent()));
         } else {
             deleteVectorStore(vectorStore, segment);
@@ -183,7 +184,8 @@ public class AiKnowledgeSegmentServiceImpl implements AiKnowledgeSegmentService
         List<Document> documents = vectorStore.similaritySearch(SearchRequest.builder()
                 .query(reqBO.getContent())
                 .topK(ObjUtil.defaultIfNull(reqBO.getTopK(), knowledge.getTopK()))
-                .similarityThreshold(ObjUtil.defaultIfNull(reqBO.getSimilarityThreshold(), knowledge.getSimilarityThreshold()))
+                .similarityThreshold(
+                        ObjUtil.defaultIfNull(reqBO.getSimilarityThreshold(), knowledge.getSimilarityThreshold()))
                 .filterExpression(new FilterExpressionBuilder()
                         .eq(VECTOR_STORE_METADATA_KNOWLEDGE_ID, reqBO.getKnowledgeId()).build())
                 .build());
@@ -202,7 +204,7 @@ public class AiKnowledgeSegmentServiceImpl implements AiKnowledgeSegmentService
 
         // 4. 构建结果
         List<AiKnowledgeSegmentSearchRespBO> result = convertList(segments, segment -> {
-            Document document = CollUtil.findOne(documents,  // 找到对应的文档
+            Document document = CollUtil.findOne(documents, // 找到对应的文档
                     doc -> Objects.equals(doc.getId(), segment.getVectorId()));
             if (document == null) {
                 return null;
@@ -210,8 +212,7 @@ public class AiKnowledgeSegmentServiceImpl implements AiKnowledgeSegmentService
             return BeanUtils.toBean(segment, AiKnowledgeSegmentSearchRespBO.class)
                     .setScore(document.getScore());
         });
-        result.sort((o1, o2)
-                -> Double.compare(o2.getScore(), o1.getScore())); // 按照分数降序排序
+        result.sort((o1, o2) -> Double.compare(o2.getScore(), o1.getScore())); // 按照分数降序排序
         return result;
     }
 
@@ -280,4 +281,35 @@ public class AiKnowledgeSegmentServiceImpl implements AiKnowledgeSegmentService
         return segmentMapper.selectProcessList(documentIds);
     }
 
+    @Override
+    public Long createKnowledgeSegment(AiKnowledgeSegmentSaveReqVO createReqVO) {
+        // 1.1 校验文档是否存在
+        AiKnowledgeDocumentDO document = knowledgeDocumentService
+                .validateKnowledgeDocumentExists(createReqVO.getDocumentId());
+        // 1.2 获取知识库信息
+        AiKnowledgeDO knowledge = knowledgeService.validateKnowledgeExists(document.getKnowledgeId());
+        // 1.3 校验 token 熟练
+        Integer tokens = tokenCountEstimator.estimate(createReqVO.getContent());
+        if (tokens > document.getSegmentMaxTokens()) {
+            throw exception(KNOWLEDGE_SEGMENT_CONTENT_TOO_LONG, tokens, document.getSegmentMaxTokens());
+        }
+
+        // 2. 保存段落
+        AiKnowledgeSegmentDO segment = BeanUtils.toBean(createReqVO, AiKnowledgeSegmentDO.class)
+                .setKnowledgeId(knowledge.getId()).setDocumentId(document.getId())
+                .setContentLength(createReqVO.getContent().length()).setTokens(tokens)
+                .setVectorId(AiKnowledgeSegmentDO.VECTOR_ID_EMPTY)
+                .setRetrievalCount(0).setStatus(CommonStatusEnum.ENABLE.getStatus());
+        segmentMapper.insert(segment);
+
+        // 3. 向量化
+        writeVectorStore(getVectorStoreById(knowledge), segment, new Document(segment.getContent()));
+        return segment.getId();
+    }
+
+    @Override
+    public AiKnowledgeSegmentDO getKnowledgeSegment(Long id) {
+        return validateKnowledgeSegmentExists(id);
+    }
+
 }