This application provides a service data flow sending method and apparatus. The method includes: receiving, by a data sending filter of user equipment (UE), a to-be-sent service data flow; obtaining, by the data sending filter, service domain name information corresponding to the to-be-sent service data flow; obtaining, by the data sending filter based on the service domain name information, a data sending pipeline corresponding to the to-be-sent service data flow; and sending, by the data sending filter, the to-be-sent service data flow by using the data sending pipeline. According to the service data flow sending method and apparatus in this application, a sending pipeline of a service data flow is determined in a relatively simple manner, thereby improving service data flow sending efficiency.