At present, there is no relevant regulation on the number of credit cards you can handle in the same bank, so you can handle credit cards in the same bank indefinitely, as long as you can apply successfully.

But it is not recommended to handle too many credit cards in the same bank. First of all, the credit card limit of the same bank is shared. No matter how much you handle, the function and credit card limit remain basically the same. Secondly, too many credit cards will affect the evaluation of other banks or lending institutions, indicating that your financial situation is very poor.