diff --git a/api/source/mk_util.cpp b/api/source/mk_util.cpp
index 13e64887..8b8e91c3 100644
--- a/api/source/mk_util.cpp
+++ b/api/source/mk_util.cpp
@@ -196,7 +196,7 @@ API_EXPORT void API_CALL mk_get_statistic(on_mk_get_statistic_cb func, void *use
 #ifdef ENABLE_MEM_DEBUG
     auto bytes = getTotalMemUsage();
     val["memory.memUsage"] = bytes;
-    val["memory.memUsageMB"] = (int)(bytes / 1024 / 1024);
+    val["memory.memUsageMB"] = (int)(bytes >> 20);
     val["memory.memBlock"] = getTotalMemBlock();
     static auto block_type_size = getBlockTypeSize();
     {
@@ -240,7 +240,7 @@ API_EXPORT void API_CALL mk_get_statistic(on_mk_get_statistic_cb func, void *use
 #ifdef ENABLE_MEM_DEBUG
             auto bytes = getThisThreadMemUsage();
             val["memUsage"] = bytes;
-            val["memUsageMB"] = bytes / 1024 / 1024;
+            val["memUsageMB"] = bytes >> 20;
             val["memBlock"] = getThisThreadMemBlock();
             {
                 int i = 0;
diff --git a/ext-codec/AAC.cpp b/ext-codec/AAC.cpp
index d17ea494..614ec979 100644
--- a/ext-codec/AAC.cpp
+++ b/ext-codec/AAC.cpp
@@ -377,7 +377,7 @@ Sdp::Ptr AACTrack::getSdp(uint8_t payload_type) const {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<AACSdp>(getExtraData()->toString(), payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
+    return std::make_shared<AACSdp>(getExtraData()->toString(), payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() >> 10);
 }
 
 namespace {
diff --git a/ext-codec/H264.cpp b/ext-codec/H264.cpp
index fa0d97e2..984e2111 100644
--- a/ext-codec/H264.cpp
+++ b/ext-codec/H264.cpp
@@ -361,7 +361,7 @@ Sdp::Ptr H264Track::getSdp(uint8_t payload_type) const {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<H264Sdp>(_sps, _pps, payload_type, getBitRate() / 1024);
+    return std::make_shared<H264Sdp>(_sps, _pps, payload_type, getBitRate() >> 10);
 }
 
 namespace {
diff --git a/ext-codec/H265.cpp b/ext-codec/H265.cpp
index 8566bb1e..ff2a1b92 100644
--- a/ext-codec/H265.cpp
+++ b/ext-codec/H265.cpp
@@ -267,7 +267,7 @@ Sdp::Ptr H265Track::getSdp(uint8_t payload_type) const {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<H265Sdp>(_vps, _sps, _pps, payload_type, getBitRate() / 1024);
+    return std::make_shared<H265Sdp>(_vps, _sps, _pps, payload_type, getBitRate() >> 10);
 }
 
 namespace {
diff --git a/ext-codec/JPEG.cpp b/ext-codec/JPEG.cpp
index df9964f3..d265f0b1 100644
--- a/ext-codec/JPEG.cpp
+++ b/ext-codec/JPEG.cpp
@@ -47,7 +47,7 @@ private:
 };
 
 Sdp::Ptr JPEGTrack::getSdp(uint8_t) const {
-    return std::make_shared<JPEGSdp>(getBitRate() / 1024);
+    return std::make_shared<JPEGSdp>(getBitRate() >> 10);
 }
 
 
diff --git a/ext-codec/L16.cpp b/ext-codec/L16.cpp
index 64ff4da1..e91d9043 100644
--- a/ext-codec/L16.cpp
+++ b/ext-codec/L16.cpp
@@ -61,7 +61,7 @@ Sdp::Ptr L16Track::getSdp(uint8_t payload_type) const {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<L16Sdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
+    return std::make_shared<L16Sdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() >> 10);
 }
 
 Track::Ptr L16Track::clone() const {
diff --git a/ext-codec/Opus.cpp b/ext-codec/Opus.cpp
index beea2a13..2f227813 100644
--- a/ext-codec/Opus.cpp
+++ b/ext-codec/Opus.cpp
@@ -62,7 +62,7 @@ Sdp::Ptr OpusTrack::getSdp(uint8_t payload_type) const {
         WarnL << getCodecName() << " Track未准备好";
         return nullptr;
     }
-    return std::make_shared<OpusSdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
+    return std::make_shared<OpusSdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() >> 10);
 }
 
 namespace {
diff --git a/server/WebApi.cpp b/server/WebApi.cpp
index 873f33cb..ed3f0b28 100755
--- a/server/WebApi.cpp
+++ b/server/WebApi.cpp
@@ -570,7 +570,7 @@ void getStatisticJson(const function<void(Value &val)> &cb) {
 #ifdef ENABLE_MEM_DEBUG
     auto bytes = getTotalMemUsage();
     val["totalMemUsage"] = (Json::UInt64) bytes;
-    val["totalMemUsageMB"] = (int) (bytes / 1024 / 1024);
+    val["totalMemUsageMB"] = (int) (bytes >> 20);
     val["totalMemBlock"] = (Json::UInt64) getTotalMemBlock();
     static auto block_type_size = getBlockTypeSize();
     {
@@ -604,7 +604,7 @@ void getStatisticJson(const function<void(Value &val)> &cb) {
             auto bytes = getThisThreadMemUsage();
             val["threadName"] = getThreadName();
             val["threadMemUsage"] = (Json::UInt64) bytes;
-            val["threadMemUsageMB"] = (Json::UInt64) (bytes / 1024 / 1024);
+            val["threadMemUsageMB"] = (Json::UInt64) (bytes >> 20);
             val["threadMemBlock"] = (Json::UInt64) getThisThreadMemBlock();
             {
                 int i = 0;
diff --git a/src/Http/HttpFileManager.cpp b/src/Http/HttpFileManager.cpp
index 6f53b8d3..c9701d43 100644
--- a/src/Http/HttpFileManager.cpp
+++ b/src/Http/HttpFileManager.cpp
@@ -284,9 +284,9 @@ static bool makeFolderMenu(const string &httpPath, const string &strFullPath, st
         } else if (fileSize < 1024 * 1024) {
             ss << fixed << setprecision(2) << " (" << fileSize / 1024.0 << "KB)";
         } else if (fileSize < 1024 * 1024 * 1024) {
-            ss << fixed << setprecision(2) << " (" << fileSize / 1024 / 1024.0 << "MB)";
+            ss << fixed << setprecision(2) << " (" << (fileSize >> 10) / 1024.0 << "MB)";
         } else {
-            ss << fixed << setprecision(2) << " (" << fileSize / 1024 / 1024 / 1024.0 << "GB)";
+            ss << fixed << setprecision(2) << " (" << (fileSize >> 20) / 1024.0 << "GB)";
         }
         ss << "</a></li>\r\n";
     }
diff --git a/src/Rtmp/Rtmp.cpp b/src/Rtmp/Rtmp.cpp
index d1d44c11..9b6ae466 100644
--- a/src/Rtmp/Rtmp.cpp
+++ b/src/Rtmp/Rtmp.cpp
@@ -34,14 +34,14 @@ VideoMeta::VideoMeta(const VideoTrack::Ptr &video) {
         _metadata.set("framerate", video->getVideoFps());
     }
     if (video->getBitRate()) {
-        _metadata.set("videodatarate", video->getBitRate() / 1024);
+        _metadata.set("videodatarate", video->getBitRate() >> 10);
     }
     _metadata.set("videocodecid", Factory::getAmfByCodecId(video->getCodecId()));
 }
 
 AudioMeta::AudioMeta(const AudioTrack::Ptr &audio) {
     if (audio->getBitRate()) {
-        _metadata.set("audiodatarate", audio->getBitRate() / 1024);
+        _metadata.set("audiodatarate", audio->getBitRate() >> 10);
     }
     if (audio->getAudioSampleRate() > 0) {
         _metadata.set("audiosamplerate", audio->getAudioSampleRate());
diff --git a/tests/test_flv.cpp b/tests/test_flv.cpp
index c0bd09e0..23e2d0b3 100644
--- a/tests/test_flv.cpp
+++ b/tests/test_flv.cpp
@@ -84,7 +84,7 @@ static bool loadFile(const char *path){
         }
         timeStamp_last = timeStamp;
     }
-    WarnL << total_size / 1024 << "KB";
+    WarnL << (total_size >> 10) << "KB";
     fclose(fp);
     return true;
 }
diff --git a/tests/test_ps.cpp b/tests/test_ps.cpp
index b1413f65..5a78b228 100644
--- a/tests/test_ps.cpp
+++ b/tests/test_ps.cpp
@@ -85,7 +85,7 @@ static bool loadFile(const char *path, const EventPoller::Ptr &poller) {
     if (ps_decoder) {
         ps_decoder->input(text, lSize);
     }
-    WarnL << lSize / 1024 << "KB";
+    WarnL << (lSize >> 10) << "KB";
     fclose(fp);
     return true;
 }
diff --git a/tests/test_rtp.cpp b/tests/test_rtp.cpp
index 6bd8d8fb..e2f558a8 100644
--- a/tests/test_rtp.cpp
+++ b/tests/test_rtp.cpp
@@ -89,7 +89,7 @@ static bool loadFile(const char *path, const EventPoller::Ptr &poller) {
     poller->doDelayTask(1, [do_read, total_size, process]() mutable {
         auto ret = do_read();
         if (!ret) {
-            WarnL << *total_size / 1024 << "KB";
+            WarnL << (*total_size >> 10) << "KB";
         }
         return ret;
     });