A method for determining paging time, which includes that: a user equipment (UE) determines a paging time unit corresponding to the UE according to an identifier of the UE, configuration parameters of paging time units, and preset rules, where the paging time units comprise a paging time unit of a first type and a paging time unit of a second type, and paging time units of different types correspond to different preset rules. A UE and a network device are also provided.