diff --git a/src/models/ChainTask.ts b/src/models/ChainTask.ts
index 8a80eba..ea8a5be 100644
--- a/src/models/ChainTask.ts
+++ b/src/models/ChainTask.ts
@@ -8,6 +8,7 @@ import { generateRandomBytes32 } from 'utils/wallet.util'
 
 import { BaseModule } from './Base'
 import { ReqTaskStatus, RequestTask, RequestTaskClass, TaskType } from './RequestTask'
+import { groupNftMintData } from 'utils/excel.util'
 
 export enum TaskStatus {
   NOTSTART = 0,
@@ -158,7 +159,7 @@ export class ChainTaskClass extends BaseModule {
         } else {
           count += 1
         }
-        if (!subTask || count >= MAX_BATCH_REQ_COUNT) {
+        if (!subTask || count > MAX_BATCH_REQ_COUNT) {
           index += 1
           count = sub.type === TaskType.MINT_NFT && sub.amount && parseInt(sub.amount) > 1 ? parseInt(sub.amount) : 1
           subTask = new RequestTask({
diff --git a/src/utils/excel.util.ts b/src/utils/excel.util.ts
index c25740d..de491b3 100644
--- a/src/utils/excel.util.ts
+++ b/src/utils/excel.util.ts
@@ -1,3 +1,4 @@
+import { MAX_BATCH_REQ_COUNT } from 'common/Constants'
 import xlsx from 'node-xlsx'
 
 export function excelToJson(filePath: string) {
@@ -16,9 +17,31 @@ export function excelToJson(filePath: string) {
     }
     let obj = {}
     for (let j = 0, k = header.length; j < k; j++) {
-      obj[header[j]] = row[j]
+      obj[header[j]] = header[j] === 'type' ? row[j] | 0 : row[j]
     }
     arr.push(obj)
   }
   return arr
 }
+
+export function groupNftMintData(datas: any[]) {
+  let dataMap = new Map()
+  let results: any[] = []
+  for (let data of datas) {
+    if (dataMap.has(data.to)) {
+      let tempData = dataMap.get(data.to)
+      if (tempData.tokenIds.length >= MAX_BATCH_REQ_COUNT) {
+        results.push(tempData)
+        data.tokenIds = [data.tokenid || data.tokenId]
+        dataMap.set(data.to, data)
+      } else {
+        tempData.tokenIds.push(data.tokenid || data.tokenId)
+      }
+    } else {
+      data.tokenIds = [data.tokenid || data.tokenId]
+      dataMap.set(data.to, data)
+    }
+  }
+  results = results.concat([...dataMap.values()])
+  return results
+}