1. I bring my original ID card and bank card to the counter of the business hall of the bank to which the bank card belongs.

2. Call the customer service phone of the bank to which the bank card belongs.

Three. Take China Merchants Bank as an example. You can check it through China Merchants Bank's mobile banking, and all major mobile app stores have downloads. Specific query methods are as follows:

1. After China Merchants Bank opens its mobile phone, click the symbol in the red box at the top of the page below. ?

2. Then select the "Bank Inquiry" option. ?

3. Then enter the bank card number to be queried. ?

4. So you can find the bank of the bank card.