The steps for Alipay to perform credit card repayment on the computer are as follows:

1. Open the Alipay official website, enter your Alipay account number and login password in the login window, and then click to log in.

2. Go to Alipay’s personal homepage, find the “Credit Card Repayment” option in the application center and click “Repay Now”.

3. On the credit card repayment page, enter the credit card number, select the issuing bank, cardholder name, repayment amount, and then click the "Submit Repayment Application" button.

4. Then enter the Alipay payment password and click "Confirm Payment" to see the prompt that the Alipay balance has been repaid to the credit card. You only need to wait for the bank to process it. After the repayment is successful, You will receive a reminder that the repayment was successful.