A service data flow sending method, comprising: receiving (S11, S21), by a data sending filter of user equipment, UE, a to-be-sent service data flow; obtaining (S12, S22), by the data sending filter, service domain name information corresponding to the to-be-sent service data flow; obtaining (S13, S23), 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, wherein the data sending pipeline includes a packet data network PDN connection or a bearer; and sending (S14, S24), by the data sending filter, the to-be-sent service data flow by using the data sending pipeline; wherein the obtaining (S12, S22) the service domain name information corresponding to the to-be-sent service data flow comprises: obtaining, by the data sending filter, the service domain name information based on Internet Protocol, IP, description information of the to-be-sent service data flow and a correspondence rule between the IP description information of the to-be-sent service data flow and the service domain name information; wherein the obtaining (S13, S23) the data sending pipeline corresponding to the to-be-sent service data flow comprises: obtaining (S23), by the data sending filter based on a correspondence rule between the service domain name information and the data sending pipeline corresponding to the to-be-sent service data flow, the data sending pipeline corresponding to the to-be-sent service data flow. receiving (S11, S21), by a data sending filter of user equipment, UE, a to-be-sent service data flow; obtaining (S12, S22), by the data sending filter, service domain name information corresponding to the to-be-sent service data flow; obtaining (S13, S23), 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, wherein the data sending pipeline includes a packet data network PDN connection or a bearer; and sending (S14, S24), by the data sending filter, the to-be-sent service data flow by using the data sending pipeline; wherein the obtaining (S12, S22) the service domain name information corresponding to the to-be-sent service data flow comprises: obtaining, by the data sending filter, the service domain name information based on Internet Protocol, IP, description information of the to-be-sent service data flow and a correspondence rule between the IP description information of the to-be-sent service data flow and the service domain name information; wherein the obtaining (S13, S23) the data sending pipeline corresponding to the to-be-sent service data flow comprises: obtaining (S23), by the data sending filter based on a correspondence rule between the service domain name information and the data sending pipeline corresponding to the to-be-sent service data flow, the data sending pipeline corresponding to the to-be-sent service data flow. obtaining, by the data sending filter, the service domain name information based on Internet Protocol, IP, description information of the to-be-sent service data flow and a correspondence rule between the IP description information of the to-be-sent service data flow and the service domain name information; wherein the obtaining (S13, S23) the data sending pipeline corresponding to the to-be-sent service data flow comprises: obtaining (S23), by the data sending filter based on a correspondence rule between the service domain name information and the data sending pipeline corresponding to the to-be-sent service data flow, the data sending pipeline corresponding to the to-be-sent service data flow. <EOS>