The credit card of China Construction Bank cannot be overdrawn once it is obtained, and it needs to be activated before it can be used. The bank card activation method is as follows:

1. Telephone activation: dial the customer service number of this bank and press "1, Chinese service", "6, bank card service", "1, card processing and card activation", 1, card activation "and" 65438+ ".

2. Counter activation: bring my ID card and bank card to the bank counter to activate;

3. Some bank cards can be activated by depositing cash.

Deposit: deposit the money first, and then you can use it, that is, activate it.