A method for creating a network slice, comprising: receiving (S411, 509) a service deployment command sent by a network slice management function, NSMF, entity; obtaining a service-related requirement parameter, a model, a policy, and a plan of a network slice, and registration information of a network function entity (140, 150, 190) in the to-be-created network slice based on the service deployment command; generating (S412, S510) a service configuration scheme of the network function entity (140, 150, 190) based on the model and the policy of the network slice and one or more of the service-related requirement parameter, the registration information of the network function entity, or the plan of the network slice; and sending (S413, S414, S511) the service configuration scheme to the network function entity (140, 150, 190); wherein the model of the network slice comprises one or more of a network model, a resource model, and a service model, wherein the network model is used to indicate network function entities (140, 150, 190) required by each service in a network slice instance and a logical connection relationship between the network function entities; the resource model is used to indicate a correspondence between a service scale and a resource quantity and a correspondence between the service scale and a network bandwidth; and the service model is used to indicate service configuration of each network function entity (140, 150, 190) and a related coordination relationship between the network function entities in terms of service configuration; wherein the policy of the network slice comprises one or more of a network policy and a service policy, wherein the network policy comprises location requirement rules of various network function entities in a network slice instance and a performance requirement rule of a network bandwidth and a latency between the network function entities; and the service policy comprises a rule of determining, based on the plan of the network slice and registration information of a network function entity, how to perform service configuration for the network function entity; wherein the plan of the network slice comprises one or more of the following: a connection plan of a network slice instance and an adjacent network and a plan of an internet protocol IP address of the network slice instance; and wherein the registration information comprises a network location and a connection topology of the network function entity (140, 150, 190), and when the network function entity is specifically a virtual network function, VNF, entity or a network function service instance running on a VNF service framework, the registration information further comprises resource information. receiving (S411, 509) a service deployment command sent by a network slice management function, NSMF, entity; obtaining a service-related requirement parameter, a model, a policy, and a plan of a network slice, and registration information of a network function entity (140, 150, 190) in the to-be-created network slice based on the service deployment command; generating (S412, S510) a service configuration scheme of the network function entity (140, 150, 190) based on the model and the policy of the network slice and one or more of the service-related requirement parameter, the registration information of the network function entity, or the plan of the network slice; and sending (S413, S414, S511) the service configuration scheme to the network function entity (140, 150, 190); wherein the model of the network slice comprises one or more of a network model, a resource model, and a service model, wherein the network model is used to indicate network function entities (140, 150, 190) required by each service in a network slice instance and a logical connection relationship between the network function entities; the resource model is used to indicate a correspondence between a service scale and a resource quantity and a correspondence between the service scale and a network bandwidth; and the service model is used to indicate service configuration of each network function entity (140, 150, 190) and a related coordination relationship between the network function entities in terms of service configuration; wherein the policy of the network slice comprises one or more of a network policy and a service policy, wherein the network policy comprises location requirement rules of various network function entities in a network slice instance and a performance requirement rule of a network bandwidth and a latency between the network function entities; and the service policy comprises a rule of determining, based on the plan of the network slice and registration information of a network function entity, how to perform service configuration for the network function entity; wherein the plan of the network slice comprises one or more of the following: a connection plan of a network slice instance and an adjacent network and a plan of an internet protocol IP address of the network slice instance; and wherein the registration information comprises a network location and a connection topology of the network function entity (140, 150, 190), and when the network function entity is specifically a virtual network function, VNF, entity or a network function service instance running on a VNF service framework, the registration information further comprises resource information.