A policy and charging control function PCRF determines an application service chain for an application based on multi-dimensional context information corresponding to the application, and transmits the corresponding application service chain information to an SDN controller. The SDN controller determines a forwarding rule for the application based on the application service chain information, and transmits the forwarding rule to a corresponding service chaining infrastructure network. SCEP(s) in the service chaining infrastructure network perform corresponding service function based on the forwarding rule.