A method and a network for beam-based mobility management are provided. The method includes the following. At least one beam signal and a signal strength of the at least one beam signal are acquired. A candidate transmission object is determined according to the signal strength of the at least one beam signal. Parameter information of the candidate transmission object is transmitted to a serving base station. Parameter information of a target handover object determined by the serving base station according to the parameter information of the candidate transmission object is received.