To check whether a credit card is a primary card or a secondary card, there are several methods:

1. Check whether the name of the primary cardholder is included in the credit card statement. If so, then The card is a secondary card; if not, the card is the primary card.

2. Check the account information in the bank's online banking or mobile banking client. Generally, there will be labels for the primary card and secondary card, which can be confirmed directly.

3. Contact the bank customer service and inform the credit card number and cardholder name. The customer service will tell you whether the card is the primary card or the secondary card.

At the same time, in order to have a more comprehensive understanding of your credit situation, you can use the credit inquiry tool to conduct inquiries. Online loan big data can clearly reflect users' recent online loan applications, whether online loans are repaid on time, whether identity information is suspected, etc.; and credit inquiry tools such as "Beijian Quick Check" can obtain a copy Detailed risk reporting. Through inquiries with these tools, you can better understand your credit status so that you can make more scientific financial decisions.