diff --git a/module/metric/control.php b/module/metric/control.php
index fc04b07a27..1c42502d4e 100755
--- a/module/metric/control.php
+++ b/module/metric/control.php
@@ -180,10 +180,11 @@ class metric extends control
             {
                 $calcObj = $calcList[$code];
                 $calcObj->result = json_decode(json_encode($calc->result), true);
-                $records[$code] = $this->metricZen->getRecordByCodeAndDate($code, $calcObj, $date);
+                $inferenceRecord = $this->metricZen->getRecordByCodeAndDate($code, $calcObj, $date);
+                if(!empty($inferenceRecord)) $records[$code] = $inferenceRecord;
             }
         }
-        $this->metric->insertMetricLib($records);
+        $this->metric->insertMetricLib($records, 'inference');
     }
 
     /**
diff --git a/module/metric/model.php b/module/metric/model.php
index 64735747b8..d4b86f898e 100755
--- a/module/metric/model.php
+++ b/module/metric/model.php
@@ -837,10 +837,11 @@ class metricModel extends model
      * Insert into metric lib.
      *
      * @param  array  $recordWithCode
+     * @param  string $calcType
      * @access public
      * @return void
      */
-    public function insertMetricLib($recordWithCode)
+    public function insertMetricLib($recordWithCode, $calcType = 'cron')
     {
         $this->dao->begin();
         foreach($recordWithCode as $code => $records)
@@ -848,6 +849,8 @@ class metricModel extends model
             foreach($records as $record)
             {
                 if(empty($record)) continue;
+
+                $record->calcType = $calcType;
                 $this->dao->insert(TABLE_METRICLIB)
                     ->data($record)
                     ->exec();
@@ -2377,4 +2380,20 @@ class metricModel extends model
 
         return $this->lang->metric->noData;
     }
+
+    public function checkHasInferenceOfDate($code, $dateType, $date)
+    {
+        if($dateType == 'day' || $dateType == 'nodate') return false;
+
+        $date = $this->parseDateStr($date, $dateType);
+
+        $records = $this->dao->select('id')->from(TABLE_METRICLIB)
+           ->where('metricCode')->eq($code)
+           ->andWhere('calcType')->eq('inference')
+           ->beginIF($dateType == 'year')->andWhere('year')->eq($date['year'])->fi()
+           ->beginIF($dateType == 'month')->andWhere('year')->eq($date['year'])->andWhere('month')->eq($date['month'])->fi()
+           ->beginIF($dateType == 'week')->andWhere('year')->eq($date['year'])->andWhere('week')->eq($date['week'])->fi()
+           ->fetch();
+        return !empty($records);
+    }
 }
diff --git a/module/metric/zen.php b/module/metric/zen.php
index 06a9ec1976..b08d22dc37 100644
--- a/module/metric/zen.php
+++ b/module/metric/zen.php
@@ -234,6 +234,9 @@ class metricZen extends metric
         $metric   = $this->metric->getByCode($code);
         $dateType = $this->metric->getDateTypeByCode($code);
 
+        if($dateType == 'nodate') return array();
+        if($this->metric->checkHasInferenceOfDate($code, $dateType, $date)) return array();
+
         $dateConfig   = $this->metric->parseDateStr($date, $dateType);
         $recordCommon = $this->buildRecordCommonFields($metric->id, $code, $now, $dateConfig);
         $initRecords  = $this->initMetricRecords($recordCommon, $metric->scope, "{$date} 23:59:59");