Hi there, weikong.

The file format that QuickBooks Desktop currently accepts is IIF. However, there are some third-party importer applications available so you can import transactions using an Excel or CSV file.

Please go to our Intuit App Store select your region then go to the Sync Data category. Select which app is best for you. 

You can check out this reference about importing IIF files is in this article: Export, import, and edit IIF files

We welcome any product suggestions as these will be the bases on our new updates. Post them here or if you have any questions. We are here to help.