diff --git a/.gitmodules b/.gitmodules
index 4a36bfba..ea879278 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "parser"]
 	path = parser
 	url = https://gitee.com/ascend/parser.git
+[submodule "metadef"]
+	path = metadef
+	url = https://gitee.com/ascend/metadef.git
diff --git a/metadef b/metadef
new file mode 160000
index 00000000..d097f7ce
--- /dev/null
+++ b/metadef
@@ -0,0 +1 @@
+Subproject commit d097f7ce4e7a3ec449e13df78e26e8a76ca48cec