A remote procedure call (RPC) method for a network device and the network device, where a client sends an RPC request to an RPC core, where the RPC request requests to call a service deployed on a server, the RPC core receives the RPC request from the client and forwards the RPC request to the server when the RPC core determines that a dynamic service registry stores valid registration information of the server, the server receives the RPC request from the RPC core, and provides a corresponding service for the client according to the RPC request.