Embodiments of this application provide a network switching method and an apparatus. A beam that currently provides a service for a terminal device is a first beam. The first beam is generated by a first network device. The first network device obtains user information of the terminal device, and further the first network device can obtain switching information based on the user information and the like, so that after the first network device sends the switching information to the terminal device, the terminal device can perform beam switching based on the switching information. In this beam switching, procedures such as measurement, reporting the user information, and receiving switched beams allocated by the network device, as in the conventional technology do not need to be performed. Therefore, signaling procedures and overheads of the network can be reduced, so that a switching response time can be reduced.