A method for accessing a base station is provided. The method includes: identifying, by a terminal device, a target base station providing a maximum received signal strength from at least one base station; receiving a system message sent by the target base station, the system message including an access parameter associated with the target base station; if a value of the access parameter satisfies a preset condition, accessing the target base station; and if the value of the access parameter does not satisfy the preset condition, maintaining access to a base station currently accessed by the terminal device.