diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..14b84f0
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "src/main/proto"]
+	path = src/main/proto
+	url = http://git.yuandian.com/project/proto/dataflow
diff --git a/src/main/proto b/src/main/proto
new file mode 160000
index 0000000..56d31bc
--- /dev/null
+++ b/src/main/proto
@@ -0,0 +1 @@
+Subproject commit 56d31bcd4df5532485a7ef22c05d0604b9c601df