The present invention discloses a method, an apparatus, and a system for forwarding a packet in SFC, which can standardize interaction between a routing and switching device and a controller, to implement smooth interconnection between the controller and the routing and switching device. The method includes: determining, by a control node, routing entry information of a service function forwarding node in a service function path SFP in the SFC, where the routing entry information records a mapping relationship between route prefix information and next hop information, the route prefix information includes a service path identifier SPI and a service index SI, the SPI is used to identify the SFP, the SI is used to identify a location of the service function forwarding node in the SFP, and the next hop information is used to indicate a next hop node of the service function forwarding node in the SFP; and sending, by the control node, the routing entry information to the service function forwarding node, where the routing entry information is used by the service function forwarding node to generate a forwarding table, and the forwarding table is used to instruct the service function forwarding node to forward a packet.