A charging and discharging system with anti-counterfeiting function of a battery pack for an electric tool includes: a battery pack which includes a data acquisition module and a battery pack verification module; and at least one charge-discharge adapter which includes an adapter verification module, an adapter controller, and a discharging communication verification module. The adapter verification module communicates with the battery pack verification module for performing anti-counterfeiting verification, if the anti-counterfeiting verification is passed, the at least one charge-discharge adapter controls the battery pack to charge or discharge; the adapter controller receives data information from the data acquisition module and controls the discharging communication verification module to work, the discharging communication verification module selects a corresponding communication protocol according to a type of the discharge interface of the at least one charge-discharge adapter for communicating with the electric tool and controls the battery pack to charge the electric tool.