diff --git a/src/components/TextareaTag/TextareaTag.tsx b/src/components/TextareaTag/TextareaTag.tsx
index 484c009..e2b475d 100644
--- a/src/components/TextareaTag/TextareaTag.tsx
+++ b/src/components/TextareaTag/TextareaTag.tsx
@@ -29,8 +29,10 @@ const TextareaTag: React.FC<TextareaTagProps> = ({
   // 处理文本输入变化
   const handleTextChange = useCallback((val: string) => {
     console.log(val,'e.detail.value')
-    onChange({...value, description: val})
-  }, [onChange])
+    const maxAllowedLength = Math.floor(maxLength * 1.2)
+    const truncatedVal = val.length > maxAllowedLength ? val.slice(0, maxAllowedLength) : val
+    onChange({...value, description: truncatedVal})
+  }, [onChange, maxLength, value])
 
   // 处理标签选择变化
   const handleTagChange = useCallback((selectedTags: string[]) => {