diff --git a/README.md b/README.md
index 58e57e6..afa28d4 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,8 @@
                 {onMSyncFun, undefined},
                 {onCSyncFun, undefined},
                 {swSyncNode, false},
-                {isJustMem, false}
+                {isJustMem, false},
+                {debugInfoKeyFun, undefined}
             ]      
         } 
     ]
\ No newline at end of file
diff --git a/eSync.sample.config b/eSync.sample.config
index fceb66f..2bd8f1d 100644
--- a/eSync.sample.config
+++ b/eSync.sample.config
@@ -29,18 +29,22 @@
       %% 默认值: fix
       {descendant, fix},
 
-      %% Beam更新回调函数 格式: undefined | {Mondule, Fun} | [{Mondule, Fun}, ...], Fun函数只有一个参数
-      {onMSyncFun, undefined},
+		%% Beam更新回调函数 格式: undefined | {Mondule, Fun} | [{Mondule, Fun}, ...], Fun函数只有一个参数
+		{onMSyncFun, undefined},
 
-      %% config更新回调函数 格式: undefined | {Mondule, Fun} | [{Mondule, Fun}, ...], Fun函数只有一个参数
-      {onCSyncFun, undefined},
+		%% config更新回调函数 格式: undefined | {Mondule, Fun} | [{Mondule, Fun}, ...], Fun函数只有一个参数
+		{onCSyncFun, undefined},
 
-      %% 是否开启集群同步加载
-      {swSyncNode, false},
+		%% 是否开启集群同步加载
+		{swSyncNode, false},
 
-      %% 仅仅内存编译还是编译写入到磁盘去
-      {isJustMem, false}
-   ]}
+		%% 仅仅内存编译还是编译写入到磁盘去
+		{isJustMem, false},
+
+		%% 如果存在debug_info_key 需要用户提供获取debug_info_key的函数 格式: undefined | {Mondule, Fun}
+		%% this fun need return: {debug_info_key, xxx}
+		{debugInfoKeyFun, undefined}
+	]}
 ].
 
 
diff --git a/src/eSync.erl b/src/eSync.erl
index ef1527f..faa206d 100644
--- a/src/eSync.erl
+++ b/src/eSync.erl
@@ -14,8 +14,7 @@
    getOnCSync/0,
    setOnCSync/0,
    setOnCSync/1,
-   swSyncNode/1,
-   getDIK/0
+   swSyncNode/1
 ]).
 
 start() ->
@@ -67,10 +66,6 @@ setOnCSync() ->
 
 setOnCSync(Fun) ->
    esSyncSrv:setOnCSync(Fun).
-   
-getDIK() ->
-	%% if use debug_info_key please return the key in this fun: {debug_info_key, xxx}
-	ok.	
 
 
 
diff --git a/src/sync/esSyncSrv.erl b/src/sync/esSyncSrv.erl
index 3e0bad5..c91bbf8 100644
--- a/src/sync/esSyncSrv.erl
+++ b/src/sync/esSyncSrv.erl
@@ -12,8 +12,9 @@
 -define(onCSyncFun, onCSyncFun).
 -define(swSyncNode, swSyncNode).
 -define(isJustMem, isJustMem).
+-define(debugInfoKeyFun, debugInfoKeyFun).
 
--define(DefCfgList, [{?Log, all}, {?compileCmd, undefined}, {?extraDirs, undefined}, {?descendant, fix}, {?onMSyncFun, undefined}, {?onCSyncFun, undefined}, {?swSyncNode, false}, {?isJustMem, false}]).
+-define(DefCfgList, [{?Log, all}, {?compileCmd, undefined}, {?extraDirs, undefined}, {?descendant, fix}, {?onMSyncFun, undefined}, {?onCSyncFun, undefined}, {?swSyncNode, false}, {?isJustMem, false}, {?debugInfoKeyFun, undefined}]).
 
 -define(esCfgSync, esCfgSync).
 -define(rootSrcDir, <<"src">>).
diff --git a/src/sync/esUtils.erl b/src/sync/esUtils.erl
index d98e833..481c902 100644
--- a/src/sync/esUtils.erl
+++ b/src/sync/esUtils.erl
@@ -11,8 +11,9 @@
 -define(onCSyncFun, onCSyncFun).
 -define(swSyncNode, swSyncNode).
 -define(isJustMem, isJustMem).
+-define(debugInfoKeyFun, debugInfoKeyFun).
 
--define(DefCfgList, [{?Log, all}, {?compileCmd, undefined}, {?extraDirs, undefined}, {?descendant, fix}, {?onMSyncFun, undefined}, {?onCSyncFun, undefined}, {?swSyncNode, false}, {?isJustMem, false}]).
+-define(DefCfgList, [{?Log, all}, {?compileCmd, undefined}, {?extraDirs, undefined}, {?descendant, fix}, {?onMSyncFun, undefined}, {?onCSyncFun, undefined}, {?swSyncNode, false}, {?isJustMem, false}, {?debugInfoKeyFun, undefined}]).
 
 -define(esCfgSync, esCfgSync).
 -define(rootSrcDir, <<"src">>).
@@ -76,7 +77,7 @@ getModOptions(Module) ->
             Options5 = maybeAddCompileInfo(Options4),
             %% add filetype to options (DTL, LFE, erl, etc)
             Options6 = addFileType(Module, Options5),
-			   Options7 = lists:keyreplace(debug_info_key, 1, Options6, eSync:getDIK()),
+            Options7 = lists:keyreplace(debug_info_key, 1, Options6, debugInfoKeyFun()),
             {ok, Options7}
          catch ExType:Error ->
             logWarnings("~p:0: ~p looking for options: ~p. ~n", [Module, ExType, Error]),
@@ -100,7 +101,7 @@ tryGetModOptions(Module) ->
       Options5 = maybeAddCompileInfo(Options4),
       %% add filetype to options (DTL, LFE, erl, etc)
       Options6 = addFileType(Module, Options5),
-	   Options7 = lists:keyreplace(debug_info_key, 1, Options6, eSync:getDIK()),
+      Options7 = lists:keyreplace(debug_info_key, 1, Options6, debugInfoKeyFun()),
       {ok, Options7}
    catch _ExType:_Error ->
       undefiend
@@ -1012,4 +1013,12 @@ dateTimeToSec(DateTime) ->
          0;
       true ->
          erlang:universaltime_to_posixtime(DateTime)
+   end.
+
+debugInfoKeyFun() ->
+   case ?esCfgSync:getv(?debugInfoKeyFun) of
+      undefined ->
+         {debug_info_key, undefined};
+      {Mod, Fun} ->
+         Mod:Fun()
    end.
\ No newline at end of file