To repay by credit card, CCB needs to download the "China Construction Bank" mobile app. Specific repayment operations are as follows:

1. Open the APP, enter your ID number and login password, and log in to the APP.

2. Click on the credit card, and then select repayment to repay the selected credit card or other credit cards.

3. You need to choose the correct payment account.

4. At present, the businesses that support repayment are: dragon card cartoon, wealth management card, quasi-credit card and one-card account.