diff --git a/.gitea/workflows/changelog_and_release.yml b/.gitea/workflows/changelog_and_release.yml
index bad3226..9bdd150 100644
--- a/.gitea/workflows/changelog_and_release.yml
+++ b/.gitea/workflows/changelog_and_release.yml
@@ -550,14 +550,25 @@ jobs:
                   f"# :memo: CHANGELOG\n\n{changelog_content}"
               )
 
-          with open(changelog_file, 'w', encoding='utf-8') as f:
-              f.write(new_content)
-
-          print(f"✅ CHANGELOG updated successfully")
-          print(f"   Added {len(commits)} commits to version {changelog_version}")
+          # 检查内容是否真的改变
+          content_changed = (new_content != existing_content)
           
-          with open('/tmp/changelog_updated.txt', 'w') as f:
-              f.write('true')
+          if content_changed:
+              with open(changelog_file, 'w', encoding='utf-8') as f:
+                  f.write(new_content)
+              
+              print(f"✅ CHANGELOG updated successfully")
+              print(f"   Added {len(commits)} commits to version {changelog_version}")
+              
+              with open('/tmp/changelog_updated.txt', 'w') as f:
+                  f.write('true')
+          else:
+              print(f"ℹ️  No new content to add")
+              print(f"   Version {changelog_version} already contains all {len(commits)} commits")
+              print(f"   This usually happens when recreating a deleted tag")
+              
+              with open('/tmp/changelog_updated.txt', 'w') as f:
+                  f.write('false')
           PYSCRIPT
 
           UPDATED=$(cat /tmp/changelog_updated.txt)
@@ -879,9 +890,13 @@ jobs:
 
           ---
 
-          ℹ️ **无有效提交**
+          ℹ️ **无新内容需要更新**
 
-          在标签之间未找到有效的提交记录。
+          可能的原因：
+          - 在标签之间未找到有效的提交记录
+          - 或者版本 \`${{ env.CHANGELOG_VERSION }}\` 已包含所有相关提交（常见于重新创建已删除的 tag）
+          
+          💡 如果你删除了 tag 后重新创建，CHANGELOG 中的内容已经存在，无需重复添加。
           EOFNOCOMMIT
           fi
 
@@ -939,7 +954,14 @@ jobs:
             echo "  - Release 已创建"
             echo "  - CHANGELOG.md 已上传为附件"
           else
-            echo "ℹ️  无有效提交，未生成 CHANGELOG"
+            echo "ℹ️  无新内容需要更新"
+            echo ""
+            echo "可能的原因:"
+            echo "  - 在标签之间未找到有效的提交记录"
+            echo "  - 或者版本 ${{ env.CHANGELOG_VERSION }} 已包含所有相关提交"
+            echo ""
+            echo "💡 提示: 如果你删除了 tag 后重新创建，CHANGELOG 中的"
+            echo "   内容已经存在，这是正常现象，无需重复添加。"
           fi
 
           echo ""