diff --git a/etc/emqx.conf b/etc/emqx.conf
index d762aef7e..166fca25c 100644
--- a/etc/emqx.conf
+++ b/etc/emqx.conf
@@ -166,6 +166,11 @@ node.name = emqx@127.0.0.1
 ## Value: String
 node.cookie = emqxsecretcookie
 
+## Data dir for the node
+##
+## Value: Folder
+node.data_dir = {{ platform_data_dir }}
+
 ## Heartbeat monitoring of an Erlang runtime system. Comment the line to disable
 ## heartbeat, or set the value as 'on'
 ##
diff --git a/priv/emqx.schema b/priv/emqx.schema
index 2136bacad..9e71248a7 100644
--- a/priv/emqx.schema
+++ b/priv/emqx.schema
@@ -191,6 +191,10 @@ end}.
   {default, "emqxsecretcookie"}
 ]}.
 
+{mapping, "node.data_dir", "emqx.data_dir", [
+  {datatype, string}
+]}.
+
 %% @doc http://erlang.org/doc/man/heart.html
 {mapping, "node.heartbeat", "vm_args.-heart", [
   {datatype, flag},