Embodiments of the present invention provide a method, an apparatus, and a system for creating a network slice. The method includes: receiving, by a network slice control function (NSCF) entity, a service deployment command sent by a network slice management function NSMF entity; obtaining, by the NSCF entity, a service-related requirement parameter, a model, a policy, and a plan of a network slice, and registration information of a network function entity based on the service deployment command; generating, by the NSCF entity, a service configuration scheme of the network function entity 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, and the plan of the network slice; and sending, by the NSCF entity, the service configuration scheme to the network function entity. Therefore, a network slice can be automatically created.