diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ced81bcb..e09df8bc 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,6 +34,7 @@ jobs:
       - run: ./dependency.sh
       - run: ./generate.sh
       - run: ./stat.sh
+      - run: ./guard.sh
       - name: Checkout ip-lists branch
         uses: actions/checkout@v2
         if: github.event_name == 'schedule' && github.ref == 'refs/heads/master'
diff --git a/guard.sh b/guard.sh
new file mode 100755
index 00000000..8980be82
--- /dev/null
+++ b/guard.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+[[ $(wc -l result/china.txt) < 3000 ]] && exit 1
+
+[[ $(wc -l result/china6.txt) < 1000 ]] && exit 2
+
+exit 0