1. Report the loss orally. When the passbook is lost, in order to prevent others from finding and using the money in the passbook, it is necessary to call the bank as soon as possible to report the loss orally. After verifying your identity and password, the customer service staff will temporarily freeze your passbook, so that in case the passbook is lost, the safety of funds can be guaranteed. 2. Officially report the loss. The validity period of oral loss reporting of passbook is only 5 days. Please report the loss at the bank counter with your valid ID card within 5 days. 3. reissue the passbook. After the loss is officially reported at the bank counter, it will generally take effect within 7 working days. After the official loss report takes effect, the bank will give you a new passbook with the same number as the previous passbook.