A local breakout, LBO, service data transmission method, comprising: receiving, by a base station LBO service data sent by user equipment, wherein the LBO service data carries information about an Internet protocol, IP, address of a first server; if information about a correspondence between the IP address of the first server and a gateway stored in the base station does not include one gateway corresponding to the information about the IP address of the first server carried in the LBO service data, sending, by the base station, a request to an LBO controller being an independent network element to provide information about an correspondence between the IP address of the first server and an IP address of the one gateway; receiving, by the base station, a first message sent by the LBO controller, wherein the first message comprises information about the correspondence between the IP address of the first server and the IP address of the one gateway, wherein the one gateway is that gateway forwarding the LBO service data to the first server; before the receiving, by the base station, the first message sent by the LBO controller, the method further comprises sending, by the base station, a second message to the LBO controller to request the LBO controller to send the information about the correspondence between the IP address of the first server and the IP address of the gateway, wherein the second message comprises at least one of the information about the IP address of the first server, identification information of the user equipment, and information about an IP address of the base station; and determining, by the base station, the one gateway forwarding the LBO service data to the first server based on the information about the correspondence between the IP address of the first server and the IP address of the gateway that is sent by the LBO controller, the received LBO service data sent by the user equipment, and the information about the IP address of the first server carried in the LBO service data, and sending, by the base station, the LBO service data to the one determined gateway. receiving, by a base station LBO service data sent by user equipment, wherein the LBO service data carries information about an Internet protocol, IP, address of a first server; if information about a correspondence between the IP address of the first server and a gateway stored in the base station does not include one gateway corresponding to the information about the IP address of the first server carried in the LBO service data, sending, by the base station, a request to an LBO controller being an independent network element to provide information about an correspondence between the IP address of the first server and an IP address of the one gateway; receiving, by the base station, a first message sent by the LBO controller, wherein the first message comprises information about the correspondence between the IP address of the first server and the IP address of the one gateway, wherein the one gateway is that gateway forwarding the LBO service data to the first server; before the receiving, by the base station, the first message sent by the LBO controller, the method further comprises sending, by the base station, a second message to the LBO controller to request the LBO controller to send the information about the correspondence between the IP address of the first server and the IP address of the gateway, wherein the second message comprises at least one of the information about the IP address of the first server, identification information of the user equipment, and information about an IP address of the base station; and determining, by the base station, the one gateway forwarding the LBO service data to the first server based on the information about the correspondence between the IP address of the first server and the IP address of the gateway that is sent by the LBO controller, the received LBO service data sent by the user equipment, and the information about the IP address of the first server carried in the LBO service data, and sending, by the base station, the LBO service data to the one determined gateway.