diff --git a/.gitmodules b/.gitmodules
index 4015d5e02..093a4a897 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +1,3 @@
 [submodule "plugins/emqttd_dashboard"]
 	path = plugins/emqttd_dashboard
 	url = https://github.com/emqtt/emqttd_dashboard.git
-[submodule "plugins/emysql"]
-	path = plugins/emysql
-	url = https://github.com/erylee/emysql.git
-[submodule "plugins/emqttd_plugin_mysql"]
-	path = plugins/emqttd_plugin_mysql
-	url = https://github.com/emqtt/emqttd_plugin_mysql.git
diff --git a/plugins/emqttd_plugin_mysql b/plugins/emqttd_plugin_mysql
deleted file mode 160000
index c2f32b5f2..000000000
--- a/plugins/emqttd_plugin_mysql
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c2f32b5f29d0b3ad7446aef1dda1c67923d27a49
diff --git a/plugins/emysql b/plugins/emysql
deleted file mode 160000
index 3305c1ad9..000000000
--- a/plugins/emysql
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3305c1ad951e091c198ae10ca852752ca598e5b0