diff --git a/CLAUDE.md b/CLAUDE.md
index 8703064..9805a22 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -299,7 +299,6 @@ type WrongQuestion struct {
     NextReviewTime     *time.Time     // 下次复习时间
     ConsecutiveCorrect int            // 连续答对次数
     IsMastered         bool           // 是否已掌握
-    Tags               []string       // 标签列表 (JSON)
 }
 ```
 
@@ -317,18 +316,6 @@ type WrongQuestionHistory struct {
 }
 ```
 
-#### 错题标签表 (`wrong_question_tags`)
-
-```go
-type WrongQuestionTag struct {
-    ID          uint      // 主键
-    UserID      uint      // 用户ID
-    Name        string    // 标签名
-    Color       string    // 标签颜色
-    Description string    // 描述
-}
-```
-
 ### 间隔重复算法（艾宾浩斯遗忘曲线）
 
 系统采用科学的间隔重复算法，根据用户答题情况自动安排复习时间：
@@ -380,7 +367,6 @@ func (wq *WrongQuestion) CalculateNextReviewTime() {
 | GET | `/api/wrong-questions/recommended` | 获取推荐错题 | `limit` |
 | DELETE | `/api/wrong-questions/:id` | 删除错题 | - |
 | DELETE | `/api/wrong-questions` | 清空错题本 | - |
-| PUT | `/api/wrong-questions/:id/tags` | 更新标签 | - |
 
 **排序选项** (`sort` 参数):
 - `review_time` - 按复习时间排序（最需要复习的在前）
@@ -388,14 +374,6 @@ func (wq *WrongQuestion) CalculateNextReviewTime() {
 - `mastery_level` - 按掌握度排序（掌握度最低的在前）
 - `time` - 按最后错误时间排序（默认）
 
-#### 标签管理 API
-
-| 方法 | 路由 | 功能 |
-|------|------|------|
-| GET | `/api/wrong-question-tags` | 获取标签列表 |
-| POST | `/api/wrong-question-tags` | 创建标签 |
-| PUT | `/api/wrong-question-tags/:id` | 更新标签 |
-| DELETE | `/api/wrong-question-tags/:id` | 删除标签 |
 
 ### 智能推荐算法
 
@@ -447,7 +425,6 @@ interface WrongQuestion {
   next_review_time?: string
   consecutive_correct: number
   is_mastered: boolean
-  tags: string[]
   recent_history?: WrongQuestionHistory[]
 }
 ```
@@ -464,11 +441,6 @@ getRecommendedWrongQuestions(limit: number = 10)
 // 获取错题统计
 getWrongQuestionStats()
 
-// 标签管理
-getWrongQuestionTags()
-createWrongQuestionTag(data)
-updateWrongQuestionTag(id, data)
-deleteWrongQuestionTag(id)
 ```
 
 ### 注意事项
diff --git a/internal/handlers/wrong_question_handler.go b/internal/handlers/wrong_question_handler.go
index c74f5c4..1718313 100644
--- a/internal/handlers/wrong_question_handler.go
+++ b/internal/handlers/wrong_question_handler.go
@@ -31,10 +31,6 @@ func GetWrongQuestions(c *gin.Context) {
 		query = query.Where("is_mastered = ?", isMastered == "true")
 	}
 
-	if tag := c.Query("tag"); tag != "" {
-		query = query.Where("tags LIKE ?", "%"+tag+"%")
-	}
-
 	// 排序
 	switch c.Query("sort") {
 	case "wrong_count":
diff --git a/internal/models/wrong_question.go b/internal/models/wrong_question.go
index 7763563..aa32d1c 100644
--- a/internal/models/wrong_question.go
+++ b/internal/models/wrong_question.go
@@ -58,7 +58,6 @@ type WrongQuestionDTO struct {
 	MasteryLevel       int                       `json:"mastery_level"`
 	ConsecutiveCorrect int                       `json:"consecutive_correct"`
 	IsMastered         bool                      `json:"is_mastered"`
-	Tags               []string                  `json:"tags"`
 	RecentHistory      []WrongQuestionHistoryDTO `json:"recent_history,omitempty"` // 最近3次历史
 }
 
diff --git a/web/src/pages/WrongQuestions.tsx b/web/src/pages/WrongQuestions.tsx
index 514a10f..0c7712d 100644
--- a/web/src/pages/WrongQuestions.tsx
+++ b/web/src/pages/WrongQuestions.tsx
@@ -126,6 +126,27 @@ const WrongQuestions: React.FC = () => {
     return String(answer)
   }
 
+  // 渲染填空题内容（将 **** 替换为下划线）
+  const renderFillInBlankContent = (content: string) => {
+    const parts = content.split('****')
+    if (parts.length === 1) {
+      return content
+    }
+
+    return (
+      <span>
+        {parts.map((part, index) => (
+          <React.Fragment key={index}>
+            {part}
+            {index < parts.length - 1 && (
+              <span> ________ </span>
+            )}
+          </React.Fragment>
+        ))}
+      </span>
+    )
+  }
+
   // 获取题型标签颜色
   const getTypeColor = (type: string) => {
     const colorMap: Record<string, string> = {
@@ -322,7 +343,11 @@ const WrongQuestions: React.FC = () => {
                     {/* 题目内容 */}
                     {item.question && (
                       <div className={styles.questionContent}>
-                        <Text>{item.question.content}</Text>
+                        <Text>
+                          {item.question.type === 'fill-in-blank'
+                            ? renderFillInBlankContent(item.question.content)
+                            : item.question.content}
+                        </Text>
                       </div>
                     )}
 
diff --git a/web/src/types/question.ts b/web/src/types/question.ts
index 91ee1cb..191f3b8 100644
--- a/web/src/types/question.ts
+++ b/web/src/types/question.ts
@@ -81,7 +81,6 @@ export interface WrongQuestion {
   mastery_level: number          // 掌握度 (0-100)
   consecutive_correct: number    // 连续答对次数
   is_mastered: boolean           // 是否已掌握
-  tags: string[]                 // 标签列表
   recent_history?: WrongQuestionHistory[]  // 最近的历史记录
 }