diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..bea23c92f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "code/application/sifarsdk"]
+	path = code/application/sifarsdk
+	url = http://192.168.6.216/xiaojiazhu/sifarsdk.git
diff --git a/code/application/sifarsdk b/code/application/sifarsdk
new file mode 160000
index 000000000..3d822939f
--- /dev/null
+++ b/code/application/sifarsdk
@@ -0,0 +1 @@
+Subproject commit 3d822939f4126eba037c4e9e716fba89260c925d
diff --git a/code/application/sifarsdk/Makefile b/code/application/sifarsdk/Makefile
deleted file mode 100644
index 513bc75ac..000000000
--- a/code/application/sifarsdk/Makefile
+++ /dev/null
@@ -1,43 +0,0 @@
-gmock:
-	$(MAKE) -C external/gtest all
-gmock_clean:
-	$(MAKE) -C external/gtest clean
-cmake:
-	$(MAKE) -C build/cmake all
-cmake_clean:
-	$(MAKE) -C build/cmake clean
-
-prepare:
-	@if [ -d ".git" ]; then \
-		echo "source code exist"; \
-	else \
-		echo "source code not exist"; \
-		git init; \
-		git remote add origin http://192.168.6.216/xiaojiazhu/sifarsdk.git; \
-		rm Makefile; \
-		git pull origin master; \
-	fi
-	@if [ -n "$(shell git status -s)" ]; then \
-		echo "source code changed."; \
-	else \
-		echo "source code do not changed."; \
-	fi
-clean_code:
-	@rm -rf !(Makefile)
-
-all:cmake
-	$(MAKE) -C cmake-shell-linux all
-clean:
-	$(MAKE) -C cmake-shell-linux clean
-	@rm -rf external/gtest/googletest-release-1.11.0 \
-	external/lvglLinux-x86/lv_sim_vscode_sdl \
-	external/openssl/openssl-1.1.1s \
-	external/openssl/build \
-	external/curl/curl-8.1.2 \
-	external/EG915Q/quectel-CM \
-	external/EG915Q/QLog_Linux_Android_V1.5.18 \
-	external/EG91/quectel-CM \
-	out \
-	cmake-shell-linux
-
-