China Postal Savings Bank's credit card supports online application, which can be applied through bank official website. The specific way is as follows:

1. Log in to the bank official website first and open the home page;

2. After entering the page, click "Credit Card" in the top bar;

3. Then select "I want to apply for a card" and "Credit card application";

4. Among all card types, select the card type to apply for, fill in the information, and then click "I want to apply for a card";

5. Fill in personal information and wait for the bank to review it after submission;

6. After the approval, the bank staff will contact you and submit relevant materials with the assistance of the staff.