diff --git a/.gitmodules b/.gitmodules
index 662dbc16..5102c2df 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,6 @@
 [submodule "framework"]
 	path = framework
 	url = git@github.com:blockchain-jd-com/jdchain-framework.git
+[submodule "core"]
+	path = core
+	url = git@github.com:blockchain-jd-com/jdchain-core.git
diff --git a/core b/core
new file mode 160000
index 00000000..25692cab
--- /dev/null
+++ b/core
@@ -0,0 +1 @@
+Subproject commit 25692cab58e5683f89e2dac26d806697404d22b6