diff --git a/scripts/export_market/export.py b/scripts/export_market/export.py
index 6ced417..307e410 100644
--- a/scripts/export_market/export.py
+++ b/scripts/export_market/export.py
@@ -67,22 +67,31 @@ def exportNftSumTable():
         writer.writerows(rows)
 
 def statData():
+    userNftNums = {}
+    boxUser = {}
     for row in nftTransferTable:
         rawData = json.loads(row['raw_data'])
         if rawData['address'].lower() == '0x8444404bD78089A5a6d5Cc57f7Df8924f2DdACB4'.lower() and \
            rawData['event'] == 'Transfer':
             fromAddress = rawData['returnValues']['from'].lower()
             toAddress = rawData['returnValues']['to'].lower()
+            tokenId = rawData['returnValues']['tokenId'].lower()
             if fromAddress == EMPTY_ADDRESS:
                 stat['nft_total'] += 1
                 stat['bindBox']['total'] += 1
+                boxUser[tokenId] = toAddress
             if toAddress == EMPTY_ADDRESS:
                 stat['bindBox']['open'] += 1
+                del boxUser[tokenId]
+            else:
+                boxUser[tokenId] = toAddress
             if toAddress == MERCHANT_ADDRESS:
                 merchant_box[rawData['returnValues']['tokenId']] = 1
             if fromAddress == MERCHANT_ADDRESS:
                 del merchant_box[rawData['returnValues']['tokenId']]
+
     #end for
+    assert(len(boxUser) == stat['bindBox']['total'] - stat['bindBox']['open'])
     stat['bindBox']['merchant_hold'] = len(merchant_box)
     stat['bindBox']['user_hold'] = stat['bindBox']['total'] - stat['bindBox']['open'] - stat['bindBox']['merchant_hold']
     for row in nftTable: