diff --git a/tag_generator.sh b/tag_generator.sh
index 27e39182..f148c1e1 100755
--- a/tag_generator.sh
+++ b/tag_generator.sh
@@ -10,17 +10,21 @@ echo "PRIVATE-TOKEN: $TOKEN $URL/projects/$PROJECT_ID/repository/tags"
 tags_json=$(curl -H "Content-Type: application/json" -H "PRIVATE-TOKEN: $TOKEN" "$URL/projects/$PROJECT_ID/repository/tags")
 #echo "tags_json:$tags_json\n"
 tags=$(echo "$tags_json" | jq -r '.[].name')
+
+# 只保留不带 _sky 后缀的 tag 作为最新 tag
+plain_tags=$(echo "$tags" | grep -v '_sky$')
+latest_tag=$(echo "$plain_tags" | head -n 1)
+
 tags_length=$(echo "$tags_json" | jq -r 'length')
 if [ "$tags_length" -lt 1 ]; then
   next_tag="v1.0.0"
 else
-  newest_tag=$(echo "$tags" | head -n 1)
-  IFS='.' read -r major minor patch <<< "$newest_tag"
+  IFS='.' read -r major minor patch <<< "$latest_tag"
   major="${major#v}"
   compare_json=""
   if [[ "$1" == "generate_tag" ]];then
-      echo "generate_tag:$newest_tag-to-master\n"
-    compare_json=$(curl -s --header "PRIVATE-TOKEN: $TOKEN" "$URL/projects/$PROJECT_ID/repository/compare?from=$newest_tag&to=master")
+      echo "generate_tag:$latest_tag-to-master\n"
+    compare_json=$(curl -s --header "PRIVATE-TOKEN: $TOKEN" "$URL/projects/$PROJECT_ID/repository/compare?from=$latest_tag&to=master")
   elif [[ "$1" == "generate_version"  ]]; then
      echo "generate_version:master-to-$CI_COMMIT_BRANCH\n"
     compare_json=$(curl -s --header "PRIVATE-TOKEN: $TOKEN" "$URL/projects/$PROJECT_ID/repository/compare?from=master&to=$CI_COMMIT_BRANCH")
@@ -45,9 +49,9 @@ else
   done < <(echo "$compare_json" | jq -c '.commits[] | {id: .id, message: .message}')
   next_tag="v$major.$new_minor.$new_patch"
 fi
-echo "New Tag:$newest_tag;New version: $next_tag;command: $1"
+echo "New Tag:$latest_tag;New version: $next_tag;command: $1"
 if [[ "$1" == "generate_tag" ]];then
-  if [ "$next_tag" == "$newest_tag" ]; then
+  if [ "$next_tag" == "$latest_tag" ]; then
     echo "no change from master,skip to generate tag"
     exit 0
   fi