diff --git a/yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/desensitize/core/slider/handler/AbstractSliderDesensitizationHandler.java b/yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/desensitize/core/slider/handler/AbstractSliderDesensitizationHandler.java
index 018fc87893..7b56329180 100644
--- a/yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/desensitize/core/slider/handler/AbstractSliderDesensitizationHandler.java
+++ b/yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/desensitize/core/slider/handler/AbstractSliderDesensitizationHandler.java
@@ -26,19 +26,14 @@ public abstract class AbstractSliderDesensitizationHandler<T extends Annotation>
         int suffixKeep = getSuffixKeep(annotation);
         String replacer = getReplacer(annotation);
         int length = origin.length();
-
-        // 情况一：原始字符串长度小于等于保留长度，则原始字符串全部替换
-        if (prefixKeep >= length || suffixKeep >= length) {
-            return buildReplacerByLength(replacer, length);
-        }
-
-        // 情况二：原始字符串长度小于等于前后缀保留字符串长度，则原始字符串全部替换
-        if ((prefixKeep + suffixKeep) >= length) {
-            return buildReplacerByLength(replacer, length);
-        }
-
-        // 情况三：原始字符串长度大于前后缀保留字符串长度，则替换中间字符串
         int interval = length - prefixKeep - suffixKeep;
+
+        // 情况一：原始字符串长度小于等于前后缀保留字符串长度，则原始字符串全部替换
+        if (interval <= 0) {
+            return buildReplacerByLength(replacer, length);
+        }
+
+        // 情况二：原始字符串长度大于前后缀保留字符串长度，则替换中间字符串
         return origin.substring(0, prefixKeep) +
                 buildReplacerByLength(replacer, interval) +
                 origin.substring(prefixKeep + interval);
@@ -52,11 +47,7 @@ public abstract class AbstractSliderDesensitizationHandler<T extends Annotation>
      * @return 构建后的替换符
      */
     private String buildReplacerByLength(String replacer, int length) {
-        StringBuilder builder = new StringBuilder();
-        for (int i = 0; i < length; i++) {
-            builder.append(replacer);
-        }
-        return builder.toString();
+        return replacer.repeat(length);
     }
 
     /**