The provident fund account number is the bank card number of the entrusted bank after the successful application for payment of the provident fund. For example, if you pay the housing provident fund in China Construction Bank, your housing provident fund account number is the bank card number of China Construction Bank. This account number is also called the joint provident fund card number. If you need to inquire or confirm your own provident fund account number, you can do it in the following ways: ask colleagues and the company's personnel department, log on to the local provident fund website or call the provident fund management center.