diff --git a/modules/core/client/app/trans-string-en.js b/modules/core/client/app/trans-string-en.js
index af22204b..182a6696 100644
--- a/modules/core/client/app/trans-string-en.js
+++ b/modules/core/client/app/trans-string-en.js
@@ -1473,7 +1473,9 @@
       SERIES_SCORE: 'score',
       SERIES_UPLOADED: 'uploaded',
       SERIES_DOWNLOADED: 'downloaded',
-      LEGEND_UNIT: ' (unit: GB)'
+      LEGEND_UNIT: ' (unit: GB)',
+      UPLOADED_LOGS_HELP: 'Only list uploaded data by client announced',
+      DOWNLOADED_LOGS_HELP: 'Only list downloaded data by client announced'
     },
 
     //score log
@@ -1499,7 +1501,7 @@
       ACTIVE_IDLE_ACCOUNT: 'Active account idle status',
       DAILY_CHECK_IN: 'Daily check in',
       SEED_TIMED: 'Torrent seeding timed increased score <a href=/torrents/{{tid}}>{{tid}}',
-      SEED_UP_DOWNLOAD: 'Torrent seeding and leeching data transfer score <a href=/torrents/{{tid}}>{{tid}}'
+      SEED_UP_DOWNLOAD: 'Torrent seeding and leeching data transfer score <a href=/torrents/{{tid}}>{{tid}}',
       ANNOUNCE_UPLOAD_LOGS: 'Client announce uploaded data',
       ANNOUNCE_DOWNLOAD_LOGS: 'Client announce downloaded data'
     },
diff --git a/modules/core/client/app/trans-string-zh-tw.js b/modules/core/client/app/trans-string-zh-tw.js
index 02ae637a..ac2d2702 100644
--- a/modules/core/client/app/trans-string-zh-tw.js
+++ b/modules/core/client/app/trans-string-zh-tw.js
@@ -1473,7 +1473,9 @@
       SERIES_SCORE: '積分',
       SERIES_UPLOADED: '上傳量',
       SERIES_DOWNLOADED: '下載量',
-      LEGEND_UNIT: ' (單位: GB)'
+      LEGEND_UNIT: ' (單位: GB)',
+      UPLOADED_LOGS_HELP: '只列出通過客戶端軟件上報的上傳量數據',
+      DOWNLOADED_LOGS_HELP: '只列出通過客戶端軟件上報的下載量數據'
     },
 
     //score log
diff --git a/modules/core/client/app/trans-string-zh.js b/modules/core/client/app/trans-string-zh.js
index 9a23662b..bc02269f 100644
--- a/modules/core/client/app/trans-string-zh.js
+++ b/modules/core/client/app/trans-string-zh.js
@@ -1473,7 +1473,9 @@
       SERIES_SCORE: '积分',
       SERIES_UPLOADED: '上传量',
       SERIES_DOWNLOADED: '下载量',
-      LEGEND_UNIT: ' (单位: GB)'
+      LEGEND_UNIT: ' (单位: GB)',
+      UPLOADED_LOGS_HELP: '只列出通过客户端软件上报的上传量数据',
+      DOWNLOADED_LOGS_HELP: '只列出通过客户端软件上报的下载量数据'
     },
 
     //score log
diff --git a/modules/core/client/less/tooltip.less b/modules/core/client/less/tooltip.less
index 4708195c..641338ee 100644
--- a/modules/core/client/less/tooltip.less
+++ b/modules/core/client/less/tooltip.less
@@ -1,8 +1,8 @@
 @import (reference) "mt-var.less";
 
 .tooltip {
-    min-width: 100px;
     .tooltip-inner {
+        min-width: 100px;
         background-color: @mt-body-background-color;
         background-color: rgba(0, 0, 0, 0.8);
         border-radius: 3px;
diff --git a/modules/data-logs/client/less/data-center.less b/modules/data-logs/client/less/data-center.less
index ea1afc3d..acc19ad3 100644
--- a/modules/data-logs/client/less/data-center.less
+++ b/modules/data-logs/client/less/data-center.less
@@ -3,6 +3,13 @@
 .data-center {
     .panel-heading {
         font-size: 16px;
+        position: relative;
+        .logs-help {
+            position: absolute;
+            right: 10px;
+            top: 12px;
+            color: @brand-primary;
+        }
     }
     .chart-logs {
         padding: 20px;
@@ -51,4 +58,9 @@
             }
         }
     }
+    .tooltip {
+        .tooltip-inner {
+            min-width: 300px;
+        }
+    }
 }
\ No newline at end of file
diff --git a/modules/data-logs/client/views/data-downloaded-history.client.view.html b/modules/data-logs/client/views/data-downloaded-history.client.view.html
index e9606fe7..23f62fcc 100644
--- a/modules/data-logs/client/views/data-downloaded-history.client.view.html
+++ b/modules/data-logs/client/views/data-downloaded-history.client.view.html
@@ -1,8 +1,12 @@
 <section class="data-center" ng-controller="DataCenterController as vm">
     <div class="panel panel-default" ng-init="vm.getUserAnnounceHistory('leeching')">
         <div class="panel-heading">
-            <i class="fa fa-line-chart text-mt"></i>&emsp;
+            <i class="fa fa-line-chart text-mt" aria-hidden="true"></i>&emsp;
             <span translate="DATA_CENTER.LAST_DAYS_DATA_DOWNLOADED_HISTORY" translate-values="{days: vm.announceConfig.announceLogDays}"></span>
+            <i class="fa fa-question-circle-o logs-help" aria-hidden="true"
+               uib-tooltip="{{ 'DATA_CENTER.DOWNLOADED_LOGS_HELP' | translate}}"
+               tooltip-placement="left">
+            </i>
         </div>
         <div class="panel-body">
             <!--<p>...</p>-->
diff --git a/modules/data-logs/client/views/data-downloaded.client.view.html b/modules/data-logs/client/views/data-downloaded.client.view.html
index 3064f79b..0e11f481 100644
--- a/modules/data-logs/client/views/data-downloaded.client.view.html
+++ b/modules/data-logs/client/views/data-downloaded.client.view.html
@@ -1,7 +1,7 @@
 <section class="data-center" ng-controller="DataCenterController as vm">
     <div class="panel panel-default" ng-init="vm.getUserDaysLogs()">
         <div class="panel-heading">
-            <i class="fa fa-line-chart text-mt"></i>&emsp;
+            <i class="fa fa-line-chart text-mt" aria-hidden="true"></i>&emsp;
             <span translate="DATA_CENTER.LAST_DAYS_DATA_DOWNLOADED" translate-values="{days: vm.announceConfig.userDaysLogDays}"></span>
         </div>
         <div class="panel-body">
diff --git a/modules/data-logs/client/views/data-score-history.client.view.html b/modules/data-logs/client/views/data-score-history.client.view.html
index 4f849a4b..a63a36d6 100644
--- a/modules/data-logs/client/views/data-score-history.client.view.html
+++ b/modules/data-logs/client/views/data-score-history.client.view.html
@@ -1,7 +1,7 @@
 <section class="data-center" ng-controller="DataCenterController as vm">
     <div class="panel panel-default" ng-init="vm.getUserScoreHistory()">
         <div class="panel-heading">
-            <i class="fa fa-line-chart text-mt"></i>&emsp;
+            <i class="fa fa-line-chart text-mt" aria-hidden="true"></i>&emsp;
             <span translate="DATA_CENTER.LAST_DAYS_DATA_SCORE_HISTORY" translate-values="{days: vm.scoreConfig.scoreLogDays}"></span>
         </div>
         <div class="panel-body">
diff --git a/modules/data-logs/client/views/data-score.client.view.html b/modules/data-logs/client/views/data-score.client.view.html
index eb099312..35a9f6ef 100644
--- a/modules/data-logs/client/views/data-score.client.view.html
+++ b/modules/data-logs/client/views/data-score.client.view.html
@@ -1,7 +1,7 @@
 <section class="data-center" ng-controller="DataCenterController as vm">
     <div class="panel panel-default" ng-init="vm.getUserDaysLogs()">
         <div class="panel-heading">
-            <i class="fa fa-line-chart text-mt"></i>&emsp;
+            <i class="fa fa-line-chart text-mt" aria-hidden="true"></i>&emsp;
             <span translate="DATA_CENTER.LAST_DAYS_DATA_SCORE" translate-values="{days: vm.announceConfig.userDaysLogDays}"></span>
         </div>
         <div class="panel-body">
diff --git a/modules/data-logs/client/views/data-uploaded-history.client.view.html b/modules/data-logs/client/views/data-uploaded-history.client.view.html
index 74a8453e..953af2a1 100644
--- a/modules/data-logs/client/views/data-uploaded-history.client.view.html
+++ b/modules/data-logs/client/views/data-uploaded-history.client.view.html
@@ -1,8 +1,12 @@
 <section class="data-center" ng-controller="DataCenterController as vm">
     <div class="panel panel-default" ng-init="vm.getUserAnnounceHistory('seeding')">
         <div class="panel-heading">
-            <i class="fa fa-line-chart text-mt"></i>&emsp;
+            <i class="fa fa-line-chart text-mt" aria-hidden="true"></i>&emsp;
             <span translate="DATA_CENTER.LAST_DAYS_DATA_UPLOADED_HISTORY" translate-values="{days: vm.announceConfig.announceLogDays}"></span>
+            <i class="fa fa-question-circle-o logs-help" aria-hidden="true"
+               uib-tooltip="{{ 'DATA_CENTER.UPLOADED_LOGS_HELP' | translate}}"
+               tooltip-placement="left">
+            </i>
         </div>
         <div class="panel-body">
             <!--<p>...</p>-->
diff --git a/modules/data-logs/client/views/data-uploaded.client.view.html b/modules/data-logs/client/views/data-uploaded.client.view.html
index 0bac684f..0b2f9f6c 100644
--- a/modules/data-logs/client/views/data-uploaded.client.view.html
+++ b/modules/data-logs/client/views/data-uploaded.client.view.html
@@ -1,7 +1,7 @@
 <section class="data-center" ng-controller="DataCenterController as vm">
     <div class="panel panel-default" ng-init="vm.getUserDaysLogs()">
         <div class="panel-heading">
-            <i class="fa fa-line-chart text-mt"></i>&emsp;
+            <i class="fa fa-line-chart text-mt" aria-hidden="true"></i>&emsp;
             <span translate="DATA_CENTER.LAST_DAYS_DATA_UPLOADED" translate-values="{days: vm.announceConfig.userDaysLogDays}"></span>
         </div>
         <div class="panel-body">