diff --git a/apps/endpoint/src/endpoint_log.erl b/apps/endpoint/src/endpoint_log.erl
index 3967c3e..753a2ff 100644
--- a/apps/endpoint/src/endpoint_log.erl
+++ b/apps/endpoint/src/endpoint_log.erl
@@ -16,8 +16,7 @@
 
 -define(SERVER, ?MODULE).
 -define(LOG_NAME, endpoint_unmatched_publish_log).
--define(DEFAULT_PATH_TEMPLATE, "${endpoint_root}/endpoint_log/unmatched_publish.log").
--define(DEFAULT_ENDPOINT_ROOT_DIR, "log").
+-define(LOG_FILE_NAME, "unmatched_publish.log").
 -define(DEFAULT_MAX_BYTES, 10485760).
 -define(DEFAULT_MAX_FILES, 10).
 -define(MAX_LOG_CONTENT_BYTES, 32 * 1024).
@@ -104,22 +103,27 @@ code_change(_OldVsn, State = #state{}, _Extra) ->
 -spec open_log() -> ok | {error, term()}.
 open_log() ->
     Config = log_config(),
-    Path = log_path(Config),
-    ok = filelib:ensure_dir(Path),
-    case disk_log:open([
-        {name, ?LOG_NAME},
-        {file, Path},
-        {type, wrap},
-        {format, external},
-        {size, {config_pos_integer(max_bytes, Config, ?DEFAULT_MAX_BYTES),
-                config_pos_integer(max_files, Config, ?DEFAULT_MAX_FILES)}},
-        {linkto, self()},
-        {repair, true}
-    ]) of
-        {ok, ?LOG_NAME} ->
-            ok;
-        {repaired, ?LOG_NAME, _Recovered, _BadBytes} ->
-            ok;
+    case log_dir(Config) of
+        {ok, Path} ->
+            File = filename:join(Path, ?LOG_FILE_NAME),
+            ok = filelib:ensure_dir(File),
+            case disk_log:open([
+                {name, ?LOG_NAME},
+                {file, File},
+                {type, wrap},
+                {format, external},
+                {size, {config_pos_integer(max_bytes, Config, ?DEFAULT_MAX_BYTES),
+                        config_pos_integer(max_files, Config, ?DEFAULT_MAX_FILES)}},
+                {linkto, self()},
+                {repair, true}
+            ]) of
+                {ok, ?LOG_NAME} ->
+                    ok;
+                {repaired, ?LOG_NAME, _Recovered, _BadBytes} ->
+                    ok;
+                {error, Reason} ->
+                    {error, Reason}
+            end;
         {error, Reason} ->
             {error, Reason}
     end.
@@ -133,18 +137,13 @@ log_config() ->
             []
     end.
 
--spec log_path(proplists:proplist()) -> file:filename_all().
-log_path(Config) ->
-    Template = proplists:get_value(path, Config, ?DEFAULT_PATH_TEMPLATE),
-    expand_path_template(Template).
-
--spec endpoint_root_dir() -> file:filename_all().
-endpoint_root_dir() ->
-    case application:get_env(endpoint, endpoints) of
-        {ok, Endpoints} ->
-            proplists:get_value(root_dir, Endpoints, ?DEFAULT_ENDPOINT_ROOT_DIR);
-        undefined ->
-            ?DEFAULT_ENDPOINT_ROOT_DIR
+-spec log_dir(proplists:proplist()) -> {ok, file:filename_all()} | {error, term()}.
+log_dir(Config) ->
+    case proplists:get_value(path, Config) of
+        Path when is_list(Path); is_binary(Path) ->
+            {ok, Path};
+        _ ->
+            {error, {missing_config, endpoint_log, path}}
     end.
 
 -spec config_pos_integer(atom(), proplists:proplist(), pos_integer()) -> pos_integer().
@@ -156,33 +155,6 @@ config_pos_integer(Key, Config, Default) ->
             Default
     end.
 
--spec expand_path_template(file:filename_all()) -> file:filename_all().
-expand_path_template(Template) ->
-    TemplateBin = iolist_to_binary(Template),
-    Vars = path_vars(),
-    Expanded = lists:foldl(fun({Name, Value}, Acc) ->
-        replace_path_var(Name, Value, Acc)
-    end, TemplateBin, Vars),
-    binary_to_list(Expanded).
-
--spec path_vars() -> [{binary(), binary()}].
-path_vars() ->
-    {{Year, Month, Day}, {Hour, _Minute, _Second}} = calendar:local_time(),
-    [
-        {<<"endpoint_root">>, iolist_to_binary(endpoint_root_dir())},
-        {<<"date">>, format_date(Year, Month, Day)},
-        {<<"year">>, integer_to_binary(Year)},
-        {<<"month">>, two_digits(Month)},
-        {<<"day">>, two_digits(Day)},
-        {<<"hour">>, two_digits(Hour)},
-        {<<"node">>, atom_to_binary(node(), utf8)}
-    ].
-
--spec replace_path_var(binary(), binary(), binary()) -> binary().
-replace_path_var(Name, Value, Template) ->
-    Template0 = binary:replace(Template, <<"${", Name/binary, "}">>, Value, [global]),
-    binary:replace(Template0, <<"{", Name/binary, "}">>, Value, [global]).
-
 -spec encode_unmatched_publish(binary(), binary()) -> binary().
 encode_unmatched_publish(RouteKey, Content) ->
     {LoggedContent, Truncated} = maybe_truncate(Content),
@@ -210,14 +182,6 @@ format_local_time() ->
         [Year, Month, Day, Hour, Minute, Second, MilliSeconds]
     )).
 
--spec format_date(integer(), integer(), integer()) -> binary().
-format_date(Year, Month, Day) ->
-    iolist_to_binary(io_lib:format("~4..0B-~2..0B-~2..0B", [Year, Month, Day])).
-
--spec two_digits(integer()) -> binary().
-two_digits(Value) ->
-    iolist_to_binary(io_lib:format("~2..0B", [Value])).
-
 -spec maybe_truncate(binary()) -> {binary(), boolean()}.
 maybe_truncate(Content) when byte_size(Content) =< ?MAX_LOG_CONTENT_BYTES ->
     {Content, false};
diff --git a/config/sys.config.src b/config/sys.config.src
index 071110e..bb83096 100644
--- a/config/sys.config.src
+++ b/config/sys.config.src
@@ -31,7 +31,7 @@
     ]},
 
     {endpoint_log, [
-      {path, "${ENDPOINT_LOG_PATH:-/var/lib/endpoint/endpoint_log/unmatched_publish.log}"},
+      {path, "${ENDPOINT_LOG_PATH:-/var/lib/endpoint/endpoint_log}"},
       {max_bytes, ${ENDPOINT_LOG_MAX_BYTES:-10485760}},
       {max_files, ${ENDPOINT_LOG_MAX_FILES:-10}}
     ]}
diff --git a/env.file b/env.file
index 18e8599..d06421a 100644
--- a/env.file
+++ b/env.file
@@ -1,17 +1,17 @@
 [dev]
 IOT_API_URL="http://127.0.0.1:18090/simulator"
 ENDPOINT_ROOT_DIR="/usr/local/code/database/"
-ENDPOINT_LOG_PATH="/usr/local/code/database/endpoint_log/unmatched_publish.log"
+ENDPOINT_LOG_PATH="/usr/local/code/database/endpoint_log"
 IOT_MNESIA_DIR="/var/lib/iot/mnesia/"
 
 [test]
 IOT_API_URL="http://127.0.0.1/api/v1"
 ENDPOINT_ROOT_DIR="/usr/local/code/database/"
-ENDPOINT_LOG_PATH="/usr/local/code/database/endpoint_log/unmatched_publish.log"
+ENDPOINT_LOG_PATH="/usr/local/code/database/endpoint_log"
 IOT_MNESIA_DIR="/var/lib/iot/mnesia/"
 
 [prod]
 IOT_API_URL="https://lgsiot.njau.edu.cn/api/v1/taskLog"
 ENDPOINT_ROOT_DIR="/var/lib/endpoint/database/"
-ENDPOINT_LOG_PATH="/var/lib/endpoint/endpoint_log/unmatched_publish.log"
+ENDPOINT_LOG_PATH="/var/lib/endpoint/endpoint_log"
 IOT_MNESIA_DIR="/var/lib/iot/mnesia/"