diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 00000000..d89276b8
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,2 @@
+# 后端 ruff format 统一格式化提交
+e63b42af482672e1dcc7eec5c4bda938f3e618f3
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2be2ae74..84cd712a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,6 +26,8 @@ jobs:
         run: cd backend && uv sync --group dev
       - name: Lint
         run: cd backend && uv run ruff check src
+      - name: Format check
+        run: cd backend && uv run ruff format --check src
       - name: Dead code
         run: cd backend && uv run vulture
       - name: Type check