A network slice selection method performed by a user equipment, UE, the method comprising: • obtaining (step 201) slice list information of a current network from a network device, wherein the slice list information of the current network comprises a plurality of pieces of slice information, and each piece of slice information comprises a service type of the slice information; • determining (step 202) a target service request; • determining, based on the target service request, a slice selection policy corresponding to the target service request; • determining a service type of the target service request; • determining available slice information from the slice list information of the current network, wherein the available slice information comprises slice information corresponding to the service type of the target service request; • selecting (step 203), from the available slice information, a target slice conforming to the slice selection policy; • connecting (step 204) a service corresponding to the target service request to the target slice, wherein said method is characterized in that: the slice selection policy comprises at least one of a quality of service requirement and a charging requirement of a slice, wherein each piece of slice information further comprises at least one of a quality of service standard and a charging standard of the slice; and • the step of selecting, from the available slice information, the target slice conforming to the slice selection policy comprises: o selecting, from the available slice information, a target slice whose quality of service standard conforms to the quality of service requirement in the slice selection policy; or o selecting, from the available slice information, a target slice whose charging standard conforms to the charging requirement in the slice selection policy; or o selecting, from the available slice information, a target slice whose quality of service standard conforms to the quality of service requirement in the slice selection policy and whose charging standard conforms to the charging requirement in the slice selection policy. • obtaining (step 201) slice list information of a current network from a network device, wherein the slice list information of the current network comprises a plurality of pieces of slice information, and each piece of slice information comprises a service type of the slice information; • determining (step 202) a target service request; • determining, based on the target service request, a slice selection policy corresponding to the target service request; • determining a service type of the target service request; • determining available slice information from the slice list information of the current network, wherein the available slice information comprises slice information corresponding to the service type of the target service request; • selecting (step 203), from the available slice information, a target slice conforming to the slice selection policy; • connecting (step 204) a service corresponding to the target service request to the target slice, • the step of selecting, from the available slice information, the target slice conforming to the slice selection policy comprises: o selecting, from the available slice information, a target slice whose quality of service standard conforms to the quality of service requirement in the slice selection policy; or o selecting, from the available slice information, a target slice whose charging standard conforms to the charging requirement in the slice selection policy; or o selecting, from the available slice information, a target slice whose quality of service standard conforms to the quality of service requirement in the slice selection policy and whose charging standard conforms to the charging requirement in the slice selection policy. o selecting, from the available slice information, a target slice whose quality of service standard conforms to the quality of service requirement in the slice selection policy; or o selecting, from the available slice information, a target slice whose charging standard conforms to the charging requirement in the slice selection policy; or o selecting, from the available slice information, a target slice whose quality of service standard conforms to the quality of service requirement in the slice selection policy and whose charging standard conforms to the charging requirement in the slice selection policy.