diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..bbf1e7040f29831cbeb18c493b6273d2cda4272b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,76 @@
+### IDE
+.idea
+*.iml
+.vscode
+.clangd
+.cache
+.clwb
+.ijwb
+
+###go.sum
+*.sum
+
+### output dir
+**/output/*
+**/_output/*
+
+### protobuf
+*.pb.go
+*_pb.js
+*_pb2.py
+
+.project
+*.prefs
+
+### ignore all `build` dir inside pkg or tools
+functionsystem/pkg/*/**/build/
+
+### ninja files
+.ninja_*
+build.ninja
+
+### vendor
+vendor/
+
+### build
+build/
+
+### thirdparty build cache
+thirdparty/thirdparty/example/build
+
+### functionsystem build cache
+functionsystem/build/CMakeFiles
+functionsystem/build/lib
+functionsystem/build/bin
+functionsystem/build/src
+functionsystem/build/tests
+functionsystem/build/*.txt
+functionsystem/build/cmake*
+functionsystem/build/*cmake
+functionsystem/build/build.ninja
+functionsystem/build/compile_commands.json
+functionsystem/output/
+
+### litebus build cache
+common/litebus/build/
+common/litebus/test/ssl_utils/
+### logs build cache
+common/utils/logs/build/
+### metrics build cache
+common/utils/metrics/build/
+
+### generated files
+functionsystem/src/common/utils/version.h
+
+### copied files
+common/utils/proto/pb/posix/*.pb.*
+common/utils/proto/posix/common.proto
+common/utils/proto/posix/core_service.proto
+common/utils/proto/posix/runtime_rpc.proto
+common/utils/proto/posix/runtime_service.proto
+common/utils/proto/posix/affinity.proto
+
+### package cache
+.build
+
+