diff --git a/webapp/services/HashRateService.php b/webapp/services/HashRateService.php
index 1f44d6a5..e4dbe9ed 100644
--- a/webapp/services/HashRateService.php
+++ b/webapp/services/HashRateService.php
@@ -14,6 +14,7 @@ class HashRateService extends BaseService
 {
     const NONE_STATE = 0;
     const RECEIVED_STATE = 1;
+    const EXCHANGE_RATE  = 10;
     public function getCrystalDto($crystalMeta,&$crystalDto){
         $crystalDto = array(
             'item_id' => $crystalMeta['id'],
@@ -50,7 +51,7 @@ class HashRateService extends BaseService
                 $crystalDto['total'] = array(
                     'param1' => intval($consumeCost),
                 );
-                $totalNum = max(0,floor($consumeCost/$hashRateMeta['parameter']));
+                $totalNum = max(0,floor($consumeCost/self::EXCHANGE_RATE/$hashRateMeta['parameter']));
                 $crystalDto['pending'] = intval($totalNum);
                 $crystalDto['state'] = $crystalDto['pending'] > 0 ? self::RECEIVED_STATE : self::NONE_STATE;
             }
@@ -61,7 +62,7 @@ class HashRateService extends BaseService
                 $crystalDto['total'] = array(
                     'param1' => intval($consumeCost),
                 );
-                $totalNum = max(0,floor($consumeCost/$hashRateMeta['parameter']));
+                $totalNum = max(0,floor($consumeCost/self::EXCHANGE_RATE/$hashRateMeta['parameter']));
                 $crystalDto['pending'] = intval($totalNum);
                 $crystalDto['state'] = $crystalDto['pending'] > 0 ? self::RECEIVED_STATE : self::NONE_STATE;
             }