diff --git a/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/Contents.json b/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/Contents.json
new file mode 100644
index 0000000..91aa35a
--- /dev/null
+++ b/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "comment_close_icon@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "comment_close_icon@3x.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/comment_close_icon@2x.png b/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/comment_close_icon@2x.png
new file mode 100644
index 0000000..8f88817
Binary files /dev/null and b/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/comment_close_icon@2x.png differ
diff --git a/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/comment_close_icon@3x.png b/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/comment_close_icon@3x.png
new file mode 100644
index 0000000..e2f03fe
Binary files /dev/null and b/keyBoard/Assets.xcassets/AI/comment_close_icon.imageset/comment_close_icon@3x.png differ
diff --git a/keyBoard/Class/AiTalk/V/KBAICommentView.m b/keyBoard/Class/AiTalk/V/KBAICommentView.m
index 2e52175..8fc8128 100644
--- a/keyBoard/Class/AiTalk/V/KBAICommentView.m
+++ b/keyBoard/Class/AiTalk/V/KBAICommentView.m
@@ -99,7 +99,7 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
   [self.closeButton mas_makeConstraints:^(MASConstraintMaker *make) {
     make.right.equalTo(self.headerView).offset(-16);
     make.centerY.equalTo(self.headerView);
-    make.width.height.mas_equalTo(30);
+    make.width.height.mas_equalTo(25);
   }];
 
   [self.inputView mas_makeConstraints:^(MASConstraintMaker *make) {
@@ -274,11 +274,49 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
 
   __weak typeof(self) weakSelf = self;
   cell.onLikeAction = ^{
-    // TODO: 处理点赞逻辑
-    reply.isLiked = !reply.isLiked;
-    reply.likeCount += reply.isLiked ? 1 : -1;
-    [weakSelf.tableView reloadRowsAtIndexPaths:@[ indexPath ]
-                              withRowAnimation:UITableViewRowAnimationNone];
+    __strong typeof(weakSelf) strongSelf = weakSelf;
+    if (!strongSelf) {
+      return;
+    }
+    
+    // 获取评论 ID（需要转换为 NSInteger）
+    NSInteger commentId = [reply.replyId integerValue];
+    
+    // 调用点赞接口
+    [strongSelf.aiVM likeCommentWithCommentId:commentId completion:^(KBCommentLikeResponse * _Nullable response, NSError * _Nullable error) {
+      dispatch_async(dispatch_get_main_queue(), ^{
+        if (error) {
+          NSLog(@"[KBAICommentView] 二级评论点赞失败：%@", error.localizedDescription);
+          // TODO: 显示错误提示
+          return;
+        }
+        
+        if (response && response.code == 0) {
+          // data = true: 点赞成功，data = false: 取消点赞成功
+          BOOL isNowLiked = response.data;
+          
+          // 更新模型状态
+          if (isNowLiked) {
+            // 点赞成功：喜欢数+1
+            reply.isLiked = YES;
+            reply.likeCount = MAX(0, reply.likeCount + 1);
+            NSLog(@"[KBAICommentView] 二级评论点赞成功，ID: %ld", (long)commentId);
+          } else {
+            // 取消点赞成功：喜欢数-1
+            reply.isLiked = NO;
+            reply.likeCount = MAX(0, reply.likeCount - 1);
+            NSLog(@"[KBAICommentView] 二级评论取消点赞成功，ID: %ld", (long)commentId);
+          }
+          
+          // 刷新对应的行
+          [strongSelf.tableView reloadRowsAtIndexPaths:@[ indexPath ]
+                                      withRowAnimation:UITableViewRowAnimationNone];
+        } else {
+          NSLog(@"[KBAICommentView] 二级评论点赞失败：%@", response.message ?: @"未知错误");
+          // TODO: 显示错误提示
+        }
+      });
+    }];
   };
 
   cell.onReplyAction = ^{
@@ -300,11 +338,49 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
 
   __weak typeof(self) weakSelf = self;
   header.onLikeAction = ^{
-    // TODO: 处理点赞逻辑
-    comment.liked = !comment.liked;
-    comment.likeCount += comment.liked ? 1 : -1;
-    [weakSelf.tableView reloadSections:[NSIndexSet indexSetWithIndex:section]
-                      withRowAnimation:UITableViewRowAnimationNone];
+    __strong typeof(weakSelf) strongSelf = weakSelf;
+    if (!strongSelf) {
+      return;
+    }
+    
+    // 获取评论 ID（需要转换为 NSInteger）
+    NSInteger commentId = [comment.commentId integerValue];
+    
+    // 调用点赞接口
+    [strongSelf.aiVM likeCommentWithCommentId:commentId completion:^(KBCommentLikeResponse * _Nullable response, NSError * _Nullable error) {
+      dispatch_async(dispatch_get_main_queue(), ^{
+        if (error) {
+          NSLog(@"[KBAICommentView] 一级评论点赞失败：%@", error.localizedDescription);
+          // TODO: 显示错误提示
+          return;
+        }
+        
+        if (response && response.code == 0) {
+          // data = true: 点赞成功，data = false: 取消点赞成功
+          BOOL isNowLiked = response.data;
+          
+          // 更新模型状态
+          if (isNowLiked) {
+            // 点赞成功：喜欢数+1
+            comment.liked = YES;
+            comment.likeCount = MAX(0, comment.likeCount + 1);
+            NSLog(@"[KBAICommentView] 一级评论点赞成功，ID: %ld", (long)commentId);
+          } else {
+            // 取消点赞成功：喜欢数-1
+            comment.liked = NO;
+            comment.likeCount = MAX(0, comment.likeCount - 1);
+            NSLog(@"[KBAICommentView] 一级评论取消点赞成功，ID: %ld", (long)commentId);
+          }
+          
+          // 刷新对应的 section
+          [strongSelf.tableView reloadSections:[NSIndexSet indexSetWithIndex:section]
+                              withRowAnimation:UITableViewRowAnimationNone];
+        } else {
+          NSLog(@"[KBAICommentView] 一级评论点赞失败：%@", response.message ?: @"未知错误");
+          // TODO: 显示错误提示
+        }
+      });
+    }];
   };
 
   header.onReplyAction = ^{
@@ -497,9 +573,8 @@ static NSInteger const kRepliesLoadCount = 5;
 - (UIButton *)closeButton {
   if (!_closeButton) {
     _closeButton = [UIButton buttonWithType:UIButtonTypeCustom];
-    [_closeButton setImage:[UIImage systemImageNamed:@"xmark"]
+    [_closeButton setImage:[UIImage imageNamed:@"comment_close_icon"]
                   forState:UIControlStateNormal];
-    _closeButton.tintColor = [UIColor labelColor];
     [_closeButton addTarget:self
                      action:@selector(closeButtonTapped)
            forControlEvents:UIControlEventTouchUpInside];