1. First, open Alipay, click "My" in the lower right corner, and on the "My" page, click "Bill".
2. Secondly, in the bill page, select the bill to be exported, click the More button, and select Export Bill in the pop-up window.
3. Then, in the Export Bill page, select the PDF format and click OK.
4. Then, you will be prompted to enter the verification password. After entering the Alipay password, click the "OK" button.
5. Finally, the system will generate a PDF file and automatically download it to the mobile phone.