diff --git a/backend/src/main/java/com/openisle/service/MedalService.java b/backend/src/main/java/com/openisle/service/MedalService.java
index 74aa8e308..f40ceeb00 100644
--- a/backend/src/main/java/com/openisle/service/MedalService.java
+++ b/backend/src/main/java/com/openisle/service/MedalService.java
@@ -83,17 +83,6 @@ public class MedalService {
         seedUserMedal.setSelected(selected == MedalType.SEED);
         medals.add(seedUserMedal);
 
-        if (user != null && medals.stream().noneMatch(MedalDto::isSelected)) {
-            medals.stream()
-                    .filter(MedalDto::isCompleted)
-                    .findFirst()
-                    .ifPresent(m -> {
-                        m.setSelected(true);
-                        user.setDisplayMedal(m.getType());
-                        userRepository.save(user);
-                    });
-        }
-
         return medals;
     }
 
diff --git a/backend/src/test/java/com/openisle/service/MedalServiceTest.java b/backend/src/test/java/com/openisle/service/MedalServiceTest.java
index dd6208de9..bcc8659c3 100644
--- a/backend/src/test/java/com/openisle/service/MedalServiceTest.java
+++ b/backend/src/test/java/com/openisle/service/MedalServiceTest.java
@@ -92,24 +92,4 @@ class MedalServiceTest {
         MedalService service = new MedalService(commentRepo, postRepo, userRepo);
         assertThrows(IllegalArgumentException.class, () -> service.selectMedal("user", MedalType.COMMENT));
     }
-
-    @Test
-    void autoSelectFirstCompletedMedal() {
-        CommentRepository commentRepo = mock(CommentRepository.class);
-        PostRepository postRepo = mock(PostRepository.class);
-        UserRepository userRepo = mock(UserRepository.class);
-
-        when(commentRepo.countByAuthor_Id(1L)).thenReturn(120L);
-        when(postRepo.countByAuthor_Id(1L)).thenReturn(0L);
-        User user = new User();
-        user.setId(1L);
-        user.setCreatedAt(LocalDateTime.of(2025, 9, 15, 0, 0));
-        when(userRepo.findById(1L)).thenReturn(Optional.of(user));
-
-        MedalService service = new MedalService(commentRepo, postRepo, userRepo);
-        List<MedalDto> medals = service.getMedals(1L);
-
-        assertEquals(MedalType.COMMENT, user.getDisplayMedal());
-        assertTrue(medals.stream().anyMatch(m -> m.getType() == MedalType.COMMENT && m.isSelected()));
-    }
 }
diff --git a/frontend_nuxt/components/CommentItem.vue b/frontend_nuxt/components/CommentItem.vue
index d3c73c32d..54d1ceb28 100644
--- a/frontend_nuxt/components/CommentItem.vue
+++ b/frontend_nuxt/components/CommentItem.vue
@@ -11,11 +11,7 @@
       <div class="common-info-content-header">
         <div class="info-content-header-left">
           <span class="user-name">{{ comment.userName }}</span>
-          <span
-            v-if="comment.medal"
-            class="medal-name"
-            @click="gotoProfileMedals(comment.userId)"
-          >{{ getMedalTitle(comment.medal) }}</span>
+          <span v-if="comment.medal" class="medal-name">{{ getMedalTitle(comment.medal) }}</span>
           <span v-if="level >= 2">
             <i class="fas fa-reply reply-icon"></i>
             <span class="user-name reply-user-name">{{ comment.parentUserName }}</span>
@@ -119,10 +115,6 @@ const CommentItem = {
       showEditor.value = !showEditor.value
     }
 
-    const gotoProfileMedals = (id) => {
-      router.push(`/users/${id}?tab=achievements`)
-    }
-
     // 合并所有子回复为一个扁平数组
     const flattenReplies = (list) => {
       let result = []
@@ -242,7 +234,7 @@ const CommentItem = {
         lightboxVisible.value = true
       }
     }
-    return { showReplies, toggleReplies, showEditor, toggleEditor, gotoProfileMedals, submitReply, copyCommentLink, renderMarkdown, isWaitingForReply, commentMenuItems, deleteComment, lightboxVisible, lightboxIndex, lightboxImgs, handleContentClick, loggedIn, replyCount, replyList, getMedalTitle }
+    return { showReplies, toggleReplies, showEditor, toggleEditor, submitReply, copyCommentLink, renderMarkdown, isWaitingForReply, commentMenuItems, deleteComment, lightboxVisible, lightboxIndex, lightboxImgs, handleContentClick, loggedIn, replyCount, replyList, getMedalTitle }
   }
 }
 
@@ -297,7 +289,6 @@ export default CommentItem
   font-size: 12px;
   margin-left: 4px;
   opacity: 0.6;
-  cursor: pointer;
 }
 
 @keyframes highlight {
diff --git a/frontend_nuxt/pages/posts/[id]/index.vue b/frontend_nuxt/pages/posts/[id]/index.vue
index 26253aae9..67060b041 100644
--- a/frontend_nuxt/pages/posts/[id]/index.vue
+++ b/frontend_nuxt/pages/posts/[id]/index.vue
@@ -43,11 +43,7 @@
           <div v-if="isMobile" class="info-content-header">
             <div class="user-name">
               {{ author.username }}
-              <span
-                v-if="author.displayMedal"
-                class="user-medal"
-                @click="gotoProfileMedals"
-              >{{ getMedalTitle(author.displayMedal) }}</span>
+              <span v-if="author.displayMedal" class="user-medal">{{ getMedalTitle(author.displayMedal) }}</span>
             </div>
             <div class="post-time">{{ postTime }}</div>
           </div>
@@ -57,11 +53,7 @@
           <div v-if="!isMobile" class="info-content-header">
             <div class="user-name">
               {{ author.username }}
-              <span
-                v-if="author.displayMedal"
-                class="user-medal"
-                @click="gotoProfileMedals"
-              >{{ getMedalTitle(author.displayMedal) }}</span>
+              <span v-if="author.displayMedal" class="user-medal">{{ getMedalTitle(author.displayMedal) }}</span>
             </div>
             <div class="post-time">{{ postTime }}</div>
           </div>
@@ -243,7 +235,6 @@ export default {
     const mapComment = (c, parentUserName = '', level = 0) => ({
       id: c.id,
       userName: c.author.username,
-      userId: c.author.id,
       medal: c.author.displayMedal,
       time: TimeManager.format(c.createdAt),
       avatar: c.author.avatar,
@@ -607,10 +598,6 @@ export default {
       router.push(`/users/${author.value.id}`)
     }
 
-    const gotoProfileMedals = () => {
-      router.push(`/users/${author.value.id}?tab=achievements`)
-    }
-
     await fetchPost()
 
     onMounted(async () => {
@@ -648,7 +635,6 @@ export default {
       isWaitingFetchingPost,
       isWaitingPostingComment,
       gotoProfile,
-      gotoProfileMedals,
       subscribed,
       loggedIn,
       isAuthor,
@@ -954,7 +940,6 @@ export default {
   font-size: 12px;
   margin-left: 4px;
   opacity: 0.6;
-  cursor: pointer;
 }
 
 .post-time {
@@ -1023,7 +1008,6 @@ export default {
 
   .user-medal {
     font-size: 12px;
-    cursor: pointer;
   }
 
   .post-time {