diff --git a/.gitea/workflows/ci-pipeline.yml b/.gitea/workflows/ci-pipeline.yml
index 5c2599b0f..936543ca9 100755
--- a/.gitea/workflows/ci-pipeline.yml
+++ b/.gitea/workflows/ci-pipeline.yml
@@ -515,6 +515,18 @@ jobs:
           EXTRA_BUILD_ARGS="$EXTRA_BUILD_ARGS NGINX_CONF=infra/docker/nginx-staging.conf"
         fi
 
+        # Worker fallback模式：基础镜像本地已构建，用普通docker build绕过buildx
+        if [ "${{ matrix.service }}" = "worker" ] && [ "${{ steps.prebuild.outputs.fallback }}" = "true" ]; then
+          echo "Fallback模式：用普通docker build（基础镜像本地已构建）"
+          BUILD_ARG_STR=""
+          for arg in $EXTRA_BUILD_ARGS; do
+            BUILD_ARG_STR="$BUILD_ARG_STR --build-arg $arg"
+          done
+          docker build -f ${{ matrix.dockerfile }} -t "${IMAGE_TAG}" $BUILD_ARG_STR .
+          echo "Fallback PR Build successful"
+          exit 0
+        fi
+
         NO_CACHE_FLAG=""
         for i in 1 2 3; do
           echo "PR Build attempt $i/3"