diff --git a/trunk/auto/auto_headers.sh b/trunk/auto/auto_headers.sh
index 51cf6cebe..adfe0251c 100755
--- a/trunk/auto/auto_headers.sh
+++ b/trunk/auto/auto_headers.sh
@@ -136,13 +136,6 @@ else
     srs_undefine_macro "SRS_AUTO_INGEST" $SRS_AUTO_HEADERS_H
 fi
 
-# for statistic.
-if [ $SRS_STAT = YES ]; then
-    srs_define_macro "SRS_AUTO_STAT" $SRS_AUTO_HEADERS_H
-else
-    srs_undefine_macro "SRS_AUTO_STAT" $SRS_AUTO_HEADERS_H
-fi
-
 if [ $SRS_GPERF = YES ]; then
     srs_define_macro "SRS_AUTO_GPERF" $SRS_AUTO_HEADERS_H
 else
diff --git a/trunk/auto/options.sh b/trunk/auto/options.sh
index cb44649e5..42742a033 100755
--- a/trunk/auto/options.sh
+++ b/trunk/auto/options.sh
@@ -20,7 +20,6 @@ SRS_NGINX=RESERVED
 SRS_SSL=RESERVED
 SRS_FFMPEG_TOOL=RESERVED
 SRS_INGEST=RESERVED
-SRS_STAT=RESERVED
 SRS_STREAM_CASTER=RESERVED
 SRS_KAFKA=RESERVED
 SRS_LIBRTMP=RESERVED
@@ -40,6 +39,7 @@ SRS_GPERF_CP=RESERVED
 SRS_GPROF=RESERVED
 #
 # Always enable the bellow features.
+SRS_STAT=YES
 SRS_TRANSCODE=YES
 SRS_HTTP_CALLBACK=YES
 SRS_HTTP_SERVER=YES
@@ -392,7 +392,6 @@ function apply_user_presets() {
         SRS_SSL=NO
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=NO
-        SRS_STAT=NO
         SRS_STREAM_CASTER=NO
         SRS_KAFKA=NO
         SRS_LIBRTMP=NO
@@ -414,7 +413,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=YES
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -436,7 +434,6 @@ function apply_user_presets() {
         SRS_SSL=NO
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=NO
-        SRS_STAT=NO
         SRS_STREAM_CASTER=NO
         SRS_KAFKA=NO
         SRS_LIBRTMP=NO
@@ -458,7 +455,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=NO
-        SRS_STAT=NO
         SRS_STREAM_CASTER=NO
         SRS_KAFKA=NO
         SRS_LIBRTMP=NO
@@ -480,7 +476,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -503,7 +498,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -525,7 +519,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -547,7 +540,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -572,7 +564,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=YES
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -594,7 +585,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=NO
@@ -616,7 +606,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=YES
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -638,7 +627,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=NO
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=YES
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -660,7 +648,6 @@ function apply_user_presets() {
         SRS_SSL=YES
         SRS_FFMPEG_TOOL=YES
         SRS_INGEST=YES
-        SRS_STAT=YES
         SRS_STREAM_CASTER=NO
         SRS_KAFKA=YES
         SRS_LIBRTMP=YES
@@ -694,6 +681,7 @@ function apply_user_detail_options() {
 
     # Always enable HTTP utilies.
     if [ $SRS_HTTP_CORE = NO ]; then SRS_HTTP_CORE=YES; echo -e "${YELLOW}[WARN] Always enable HTTP utilies.${BLACK}"; fi
+    if [ $SRS_STAT = NO ]; then SRS_STAT=YES; echo -e "${YELLOW}[WARN] Always enable Statistic.${BLACK}"; fi
     if [ $SRS_TRANSCODE = NO ]; then SRS_TRANSCODE=YES; echo -e "${YELLOW}[WARN] Always enable Transcode.${BLACK}"; fi
     if [ $SRS_HTTP_CALLBACK = NO ]; then SRS_HTTP_CALLBACK=YES; echo -e "${YELLOW}[WARN] Always enable HTTP callback.${BLACK}"; fi
     if [ $SRS_HTTP_SERVER = NO ]; then SRS_HTTP_SERVER=YES; echo -e "${YELLOW}[WARN] Always enable HTTP server.${BLACK}"; fi
diff --git a/trunk/src/app/srs_app_http_api.cpp b/trunk/src/app/srs_app_http_api.cpp
index a86c5802c..7339b25db 100644
--- a/trunk/src/app/srs_app_http_api.cpp
+++ b/trunk/src/app/srs_app_http_api.cpp
@@ -609,11 +609,7 @@ srs_error_t SrsGoApiFeatures::serve_http(ISrsHttpResponseWriter* w, ISrsHttpMess
 #else
     features->set("ingest", SrsJsonAny::boolean(false));
 #endif
-#ifdef SRS_AUTO_STAT
     features->set("stat", SrsJsonAny::boolean(true));
-#else
-    features->set("stat", SrsJsonAny::boolean(false));
-#endif
 #ifdef SRS_AUTO_NGINX
     features->set("nginx", SrsJsonAny::boolean(true));
 #else
diff --git a/trunk/src/app/srs_app_server.cpp b/trunk/src/app/srs_app_server.cpp
index 1f0a25d91..05b9e7208 100644
--- a/trunk/src/app/srs_app_server.cpp
+++ b/trunk/src/app/srs_app_server.cpp
@@ -903,7 +903,6 @@ srs_error_t SrsServer::do_cycle()
     // find the max loop
     int max = srs_max(0, SRS_SYS_TIME_RESOLUTION_MS_TIMES);
     
-#ifdef SRS_AUTO_STAT
     max = srs_max(max, SRS_SYS_RUSAGE_RESOLUTION_TIMES);
     max = srs_max(max, SRS_SYS_CPU_STAT_RESOLUTION_TIMES);
     max = srs_max(max, SRS_SYS_DISK_STAT_RESOLUTION_TIMES);
@@ -911,7 +910,6 @@ srs_error_t SrsServer::do_cycle()
     max = srs_max(max, SRS_SYS_PLATFORM_INFO_RESOLUTION_TIMES);
     max = srs_max(max, SRS_SYS_NETWORK_DEVICE_RESOLUTION_TIMES);
     max = srs_max(max, SRS_SYS_NETWORK_RTMP_SERVER_RESOLUTION_TIMES);
-#endif
     
     // for asprocess.
     bool asprocess = _srs_config->get_asprocess();
@@ -988,7 +986,6 @@ srs_error_t SrsServer::do_cycle()
                 srs_update_system_time_ms();
             }
             
-#ifdef SRS_AUTO_STAT
             if ((i % SRS_SYS_RUSAGE_RESOLUTION_TIMES) == 0) {
                 srs_info("update resource info, rss.");
                 srs_update_system_rusage();
@@ -1023,7 +1020,6 @@ srs_error_t SrsServer::do_cycle()
                     http_heartbeat->heartbeat();
                 }
             }
-#endif
             
             srs_info("server main thread loop");
         }
diff --git a/trunk/src/main/srs_main_server.cpp b/trunk/src/main/srs_main_server.cpp
index 933a5752e..3e4c46a23 100644
--- a/trunk/src/main/srs_main_server.cpp
+++ b/trunk/src/main/srs_main_server.cpp
@@ -230,7 +230,7 @@ void show_macro_features()
         // inge(ingest)
         ss << ", inge:" << srs_bool2switch(SRS_AUTO_INGEST_BOOL);
         ss << ", kafka:" << srs_bool2switch(SRS_AUTO_KAFKA_BOOL);
-        ss << ", stat:" << srs_bool2switch(SRS_AUTO_STAT_BOOL);
+        ss << ", stat:" << srs_bool2switch(true);
         ss << ", nginx:" << srs_bool2switch(SRS_AUTO_NGINX_BOOL);
         // ff(ffmpeg)
         ss << ", ff:" << srs_bool2switch(SRS_AUTO_FFMPEG_TOOL_BOOL);