diff --git a/app.py b/app.py
index cc64efda..fef1ee5d 100755
--- a/app.py
+++ b/app.py
@@ -10990,6 +10990,7 @@ def create_event_post(event_id):
                 'created_at': post.created_at.isoformat(),
                 'user': {
                     'id': current_user.id,
+                    'nickname': current_user.nickname,  # 添加昵称，与导航区保持一致
                     'username': current_user.username,
                     'avatar_url': current_user.avatar_url
                 }
diff --git a/src/mocks/handlers/event.js b/src/mocks/handlers/event.js
index 6b2b4fee..1981def2 100644
--- a/src/mocks/handlers/event.js
+++ b/src/mocks/handlers/event.js
@@ -1552,7 +1552,7 @@ export const eventHandlers = [
         try {
             // 从内存存储中删除评论
             let deleted = false;
-            for (const [eventId, comments] of eventCommentsStore.entries()) {
+            for (const [eventId, comments] of commentsStore.entries()) {
                 const index = comments.findIndex(c => String(c.id) === String(postId));
                 if (index !== -1) {
                     comments.splice(index, 1);
diff --git a/src/services/eventService.js b/src/services/eventService.js
index 8c5ba657..f8e8fe77 100755
--- a/src/services/eventService.js
+++ b/src/services/eventService.js
@@ -210,7 +210,8 @@ export const eventService = {
                     ...post,
                     author: post.user ? {
                         id: post.user.id,
-                        username: post.user.username,
+                        // 与导航区保持一致：优先显示昵称
+                        username: post.user.nickname || post.user.username,
                         avatar: post.user.avatar_url || post.user.avatar  // 兼容 avatar_url 和 avatar
                     } : {
                         id: 'anonymous',