Taobao sellers can open credit card payment in the background of Niu Qian. The specific steps are as follows:

1. Download Niu Qian app on the mobile phone and install it on the mobile phone;

2. Then enter the login page of Niuqian app and log in with the merchant account;

3. Then find "Software Service" in the seller's workbench, and then select "I want to order" in it;

4. Then search for "credit card payment" in the search bar of the service market;

5. Click "Credit Card Payment" in the search results;

6. In the credit card payment service interface, click "Buy Now";

7. After the order is successfully popped up, the buyer can pay by credit card.