A method for sending service data, comprising: receiving (101, 201), by a base station, a service attribute message sent by a base station controller, wherein the service attribute message comprises attribute information of each service corresponding to service data that is pertaining to a user equipment, UE, and is cached in the base station controller, and the attribute information comprises a service type and a service priority; obtaining (102, 202), by the base station, a user priority of the UE, according to the service attribute message and attribute information of each service corresponding to service data of the UE that is cached locally in a base station, wherein the service data cached in the base station controller and the service data cached in the base station pertains to the same UE; granting (103, 203), by the base station, an air interface bandwidth to the UE according to the user priority of the UE; granting (104, 204), by the base station, an air interface bandwidth to each service of the UE, according to the air interface bandwidth granted to the UE and the service priority of each service of the UE; sending (105, 205), by the base station, air interface bandwidth information of each service to the base station controller, wherein the air interface bandwidth information of each service corresponds to the service data of the UE that is cached in the base station controller; sending, by the base station controller, service data that is cached in the base station controller to the base station, according to the air interface bandwidth to each service of the UE; sending, by the base station, service data that is cached in the base station and the service data that is received from the base station controller, to the UE, according to the air interface bandwidth to each service of the UE. receiving (101, 201), by a base station, a service attribute message sent by a base station controller, wherein the service attribute message comprises attribute information of each service corresponding to service data that is pertaining to a user equipment, UE, and is cached in the base station controller, and the attribute information comprises a service type and a service priority; obtaining (102, 202), by the base station, a user priority of the UE, according to the service attribute message and attribute information of each service corresponding to service data of the UE that is cached locally in a base station, wherein the service data cached in the base station controller and the service data cached in the base station pertains to the same UE; granting (103, 203), by the base station, an air interface bandwidth to the UE according to the user priority of the UE; granting (104, 204), by the base station, an air interface bandwidth to each service of the UE, according to the air interface bandwidth granted to the UE and the service priority of each service of the UE; sending (105, 205), by the base station, air interface bandwidth information of each service to the base station controller, wherein the air interface bandwidth information of each service corresponds to the service data of the UE that is cached in the base station controller; sending, by the base station controller, service data that is cached in the base station controller to the base station, according to the air interface bandwidth to each service of the UE; sending, by the base station, service data that is cached in the base station and the service data that is received from the base station controller, to the UE, according to the air interface bandwidth to each service of the UE.