To export bank details, you need to log in to online banking or go to a bank branch to operate.

Take online banking as an example. First select the account to be exported and enter the account details page.

Find the "Account Details" or "Transaction Details" option in the menu on the left side of the page, and select filter conditions based on the time range and transaction type.

Then click the "Export" button and select the export file format and save path. Export files are generally in Excel format and can be opened and edited on a computer.

Please note that the export methods of different banks may be different. Please refer to the respective bank’s online banking regulations for specific operations.