diff --git a/.gitea/workflows/register-runners.yml b/.gitea/workflows/register-runners.yml
index 2c5bb77a4..65fd70571 100644
--- a/.gitea/workflows/register-runners.yml
+++ b/.gitea/workflows/register-runners.yml
@@ -3,11 +3,89 @@ on:
   workflow_dispatch:
 
 jobs:
-  register:
+  register-on-host:
     runs-on: saas
     steps:
-      - uses: actions/checkout@v3
-      - name: register-6-runners
+      - name: register-6-saas-runners
         run: |
-          chmod +x register_runners.sh
-          bash register_runners.sh
+          # 通过 nsenter 进入宿主机执行注册
+          docker run --rm --privileged --pid=host alpine nsenter -t 1 -m -u -n -i sh -c '
+            set -e
+            echo "=== Host Info ==="
+            hostname
+            ls /opt/act-runner/ 2>/dev/null || echo "no /opt/act-runner"
+            
+            # 找act_runner二进制
+            ACT_RUNNER=""
+            for p in /opt/act-runner/runner-1/act_runner /opt/act-runner/runner-2/act_runner /usr/local/bin/act_runner; do
+              if [ -f "$p" ]; then
+                ACT_RUNNER="$p"
+                echo "Found act_runner: $p"
+                break
+              fi
+            done
+            
+            if [ -z "$ACT_RUNNER" ]; then
+              echo "act_runner not found, searching..."
+              find /opt -name act_runner -type f 2>/dev/null | head -5
+              exit 1
+            fi
+            
+            # 检测是否是新服务器（有5个以上runner目录）
+            RUNNER_COUNT=$(find /opt/act-runner -maxdepth 1 -type d -name "runner-*" 2>/dev/null | wc -l)
+            echo "Existing runner dirs: $RUNNER_COUNT"
+            
+            if [ "$RUNNER_COUNT" -lt 5 ]; then
+              echo "Not the new server, skipping"
+              exit 0
+            fi
+            
+            echo "=== New server detected! Registering 6 repo-level runners ==="
+            
+            REPO_TOKEN="ZMFH02WcdElay5ATmhhQYe1WNTESO9XMXcF0H9Tj"
+            GITEA_URL="https://git.xiaoxiajianji.com"
+            BASE_DIR="/opt/act-runner"
+            LABELS="saas,runtime-builder,host,ubuntu-latest"
+            
+            for i in 6 7 8 9 10 11; do
+              RUNNER_DIR="${BASE_DIR}/saas-runner-${i}"
+              echo "--- saas-runner-${i} ---"
+              
+              mkdir -p "$RUNNER_DIR"
+              cd "$RUNNER_DIR"
+              
+              $ACT_RUNNER register \
+                --instance "$GITEA_URL" \
+                --token "$REPO_TOKEN" \
+                --name "saas-runner-${i}" \
+                --labels "$LABELS" \
+                --no-interactive 2>&1
+              
+              # 创建systemd服务
+              cat > /etc/systemd/system/gitea-saas-runner-${i}.service << EOF
+[Unit]
+Description=Gitea Actions SAAS Runner ${i}
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=${RUNNER_DIR}
+ExecStart=${ACT_RUNNER} daemon
+Restart=always
+RestartSec=5
+User=root
+
+[Install]
+WantedBy=multi-user.target
+EOF
+              
+              systemctl daemon-reload
+              systemctl enable gitea-saas-runner-${i}
+              systemctl start gitea-saas-runner-${i}
+              echo "Started saas-runner-${i}"
+            done
+            
+            echo "=== DONE ==="
+            systemctl status gitea-saas-runner-6 --no-pager | head -10
+            echo "..."
+          '