diff --git a/eRum.sample.config b/eRum.sample.config
index a661025..d1a74de 100644
--- a/eRum.sample.config
+++ b/eRum.sample.config
@@ -39,7 +39,7 @@
       %% crash log cfg
       %% 有效值 string | false
       %% 为 false 的时候 没有 crash logger.
-      {crash_log, "log/crash.log"},
+      {crashLogFile, "crash.log"},
       %%崩溃日志中事件的最大大小（以字节为单位）-默认为65536
       {crash_log_msg_size, 65536},
       %% 崩溃日志的最大大小（以字节为单位），在旋转之前，设置为0以禁用旋转-默认值为0
diff --git a/src/misc/rumCrashLog.erl b/src/crashLog/rumCrashLog.erl
similarity index 100%
rename from src/misc/rumCrashLog.erl
rename to src/crashLog/rumCrashLog.erl
diff --git a/src/eRum.app.src b/src/eRum.app.src
index 9932d63..619c4bc 100644
--- a/src/eRum.app.src
+++ b/src/eRum.app.src
@@ -4,7 +4,7 @@
       {vsn, "3.9.0"},
       {modules, []},
       {applications, [kernel, stdlib, goldrush]},
-      {registered, [eRum_sup, lager_event, rumCrashLog, rumHleWatcherSup]},
+      {registered, [eRum_sup, lager_event, rumCrashLog, rumHWatcherSup]},
       {mod, {eRum_app, []}},
       {env, [
          %% Note: application:start(lager) overwrites previously defined environment variables thus declaration of default handlers is done at lager_app.erl
diff --git a/src/eRum_sup.erl b/src/eRum_sup.erl
index 4b7875d..1c5de7d 100644
--- a/src/eRum_sup.erl
+++ b/src/eRum_sup.erl
@@ -45,42 +45,41 @@ init(_Args) ->
 
    RumEventSpec = #{
       id => rumEvent,
-      start => {gen_event, start_link, [{local, rumEvent}]},
+      start => {gen_emm, start_link, [{local, rumEvent}]},
       restart => permanent,
       shutdown => 5000,
       type => worker,
       modules => [dynamic]
    },
-   RumHleWatcherSupSpec = #{
-      id => rumHleWatcherSup,
-      start => {rumHleWatcherSup, start_link, []},
+
+   RumHWatcherSupSpec = #{
+      id => rumHWatcherSup,
+      start => {rumHWatcherSup, start_link, []},
       restart => permanent,
       shutdown => 5000,
       type => supervisor,
-      modules => [rumHleWatcherSup]
+      modules => [rumHWatcherSup]
    },
 
-   CrashLogSpec = crashLogSpec(application:get_env(lager, crash_log, false)),
+   CrashLogSpec = crashLogSpec(application:get_env(?RumAppName, crashLogFile, false)),
 
    ChildSpecs =
       case CrashLogSpec of
          undefined ->
-            [RumEventSpec, RumHleWatcherSupSpec];
+            [RumEventSpec, RumHWatcherSupSpec];
          _ ->
-            [RumEventSpec, RumHleWatcherSupSpec, CrashLogSpec]
+            [RumEventSpec, RumHWatcherSupSpec, CrashLogSpec]
       end,
    {ok, {SupFlags, ChildSpecs}}.
 
-crashLogSpec(undefined) ->
-   undefined;
 crashLogSpec(false) ->
    undefined;
 crashLogSpec(File) ->
-   MaxBytes = ensurePositive(application:get_env(?RumAppName, crash_log_msg_size), 65536),
-   RotationSize = ensurePositive(application:get_env(?RumAppName, crash_log_size), 0),
-   RotationCount = ensurePositive(application:get_env(?RumAppName, crash_log_count), 0),
-   RotationDate = rotationDate(application:get_env(?RumAppName, crash_log_date)),
-   RotationMod = rotatorMod(application:get_env(?RumAppName, crash_log_rotator), lager_rotator_default),
+   MaxBytes = rumUtil:get_env(?RumAppName, crash_log_msg_size, 65536),
+   RotationSize = rumUtil:get_env(?RumAppName, crash_log_size, 0),
+   RotationCount = rumUtil:get_env(?RumAppName, crash_log_count, 0),
+   RotationDate = rumUtil:get_env(?RumAppName, crash_log_date, "$D0"),
+   RotationMod = rumUtil:get_env(?RumAppName, crash_log_rotator, lager_rotator_default),
    #{
       id => rumCrashLog,
       start => {rumCrashLog, start_link, [File, MaxBytes, RotationSize, RotationDate, RotationCount, RotationMod]},
@@ -90,27 +89,3 @@ crashLogSpec(File) ->
       modules => [rumCrashLog]
    }.
 
-%% IMY-todo 下面这些函数删除掉
-
-ensurePositive({ok, Val}, _Default) when is_integer(Val) andalso Val >= 0 ->
-   Val;
-ensurePositive(_Val, Default) ->
-   Default.
-
-rotationDate({ok, ""}) ->
-   undefined;
-rotationDate({ok, Val3}) ->
-   case rumUtil:parse_rotation_date_spec(Val3) of
-      {ok, Spec} -> Spec;
-      {error, _} ->
-         error_logger:error_msg("Invalid date spec for crash log ~p~n", [Val3]),
-         undefined
-   end;
-rotationDate(_) ->
-   undefined.
-
-rotatorMod({ok, Mod}, _Default) when is_atom(Mod) ->
-   Mod;
-rotatorMod(_, Default) ->
-   Default.
-
diff --git a/src/utils/rumUtil.erl b/src/utils/rumUtil.erl
index 32a0b5d..caf29ea 100644
--- a/src/utils/rumUtil.erl
+++ b/src/utils/rumUtil.erl
@@ -29,6 +29,7 @@
    , otp_version/0
    , maybe_flush/2
    , has_file_changed/3
+   , get_env/3
 ]).
 
 -ifdef(TEST).
@@ -637,6 +638,20 @@ has_file_changed(Name, Inode0, Ctime0) ->
          {true, undefined}
    end.
 
+-spec get_env(Application, Par, Def) -> Val when
+   Application :: atom(),
+   Par :: atom(),
+   Def :: term(),
+   Val :: term().
+
+get_env(Application, Key, Def) ->
+   case application:get_env(Application, Key) of
+      {ok, Val} ->
+         Val;
+      _ ->
+         Def
+   end.
+
 -ifdef(TEST).
 
 parse_test() ->
diff --git a/src/watcher/rumHleWatcherSrv.erl b/src/watcher/rumHWatcherSrv.erl
similarity index 99%
rename from src/watcher/rumHleWatcherSrv.erl
rename to src/watcher/rumHWatcherSrv.erl
index 439200c..f4f1c47 100644
--- a/src/watcher/rumHleWatcherSrv.erl
+++ b/src/watcher/rumHWatcherSrv.erl
@@ -1,4 +1,4 @@
--module(rumHleWatcherSrv).
+-module(rumHWatcherSrv).
 
 -behaviour(gen_srv).
 
diff --git a/src/watcher/rumHleWatcherSup.erl b/src/watcher/rumHWatcherSup.erl
similarity index 91%
rename from src/watcher/rumHleWatcherSup.erl
rename to src/watcher/rumHWatcherSup.erl
index 40a5cbe..18e8cd4 100644
--- a/src/watcher/rumHleWatcherSup.erl
+++ b/src/watcher/rumHWatcherSup.erl
@@ -1,4 +1,4 @@
--module(rumHleWatcherSup).
+-module(rumHWatcherSup).
 
 -behaviour(supervisor).
 
@@ -36,12 +36,12 @@ init(_Args) ->
       },
    ChildSpecs = [
       #{
-         id => rumHleWatcherSrv,
-         start => {rumHleWatcherSrv, start_link, []},
+         id => rumHWatcherSrv,
+         start => {rumHWatcherSrv, start_link, []},
          restart => temporary,
          shutdown => 5000,
          type => worker,
-         modules => [rumHleWatcherSrv]
+         modules => [rumHWatcherSrv]
       }
    ],
    {ok, {SupFlags, ChildSpecs}}.