A method for configuring a radio bearer for a wearable device, wherein the method comprises: sending, by a base station, a first message to relay user equipment, wherein the first message comprises first radio bearer configuration information; receiving, by the base station, a first complete message sent by the relay user equipment after the relay user equipment configures radio bearers for the wearable device on interfaces of the relay user equipment based on the first radio bearer configuration information; sending, by the base station, a second message to the wearable device, wherein the second message comprises second radio bearer configuration information; receiving, by the base station, a second complete message sent by the wearable device after the wearable device configures a radio bearer on an interface of the wearable device based on the second radio bearer configuration information; and setting up, by the base station, a wireless connection to the wearable device by using the relay user equipment, wherein before the sending, by a base station, the first message to the relay user equipment, the method further comprises: receiving, by the base station, a third message directly sent by the wearable device by using a cellular link, wherein the third message comprises attribute information of the relay user equipment; determining, by the base station, the relay user equipment based on the attribute information of the relay user equipment; sending, by the base station, the attribute information of the relay user equipment to a mobility management entity, MME, when context information of the relay user equipment is not stored on the base station; forwarding, by the base station to the relay user equipment, a paging message sent by the MME when the MME determines that the relay user equipment is in an idle mode; receiving, by the base station, a radio resource control, RRC, connection request message sent by the relay user equipment based on the paging message; and setting up, by the base station, an RRC connection to the relay user equipment based on the RRC connection request message. sending, by a base station, a first message to relay user equipment, wherein the first message comprises first radio bearer configuration information; receiving, by the base station, a first complete message sent by the relay user equipment after the relay user equipment configures radio bearers for the wearable device on interfaces of the relay user equipment based on the first radio bearer configuration information; sending, by the base station, a second message to the wearable device, wherein the second message comprises second radio bearer configuration information; receiving, by the base station, a second complete message sent by the wearable device after the wearable device configures a radio bearer on an interface of the wearable device based on the second radio bearer configuration information; and setting up, by the base station, a wireless connection to the wearable device by using the relay user equipment, wherein before the sending, by a base station, the first message to the relay user equipment, the method further comprises: receiving, by the base station, a third message directly sent by the wearable device by using a cellular link, wherein the third message comprises attribute information of the relay user equipment; determining, by the base station, the relay user equipment based on the attribute information of the relay user equipment; sending, by the base station, the attribute information of the relay user equipment to a mobility management entity, MME, when context information of the relay user equipment is not stored on the base station; forwarding, by the base station to the relay user equipment, a paging message sent by the MME when the MME determines that the relay user equipment is in an idle mode; receiving, by the base station, a radio resource control, RRC, connection request message sent by the relay user equipment based on the paging message; and setting up, by the base station, an RRC connection to the relay user equipment based on the RRC connection request message. receiving, by the base station, a third message directly sent by the wearable device by using a cellular link, wherein the third message comprises attribute information of the relay user equipment; determining, by the base station, the relay user equipment based on the attribute information of the relay user equipment; sending, by the base station, the attribute information of the relay user equipment to a mobility management entity, MME, when context information of the relay user equipment is not stored on the base station; forwarding, by the base station to the relay user equipment, a paging message sent by the MME when the MME determines that the relay user equipment is in an idle mode; receiving, by the base station, a radio resource control, RRC, connection request message sent by the relay user equipment based on the paging message; and setting up, by the base station, an RRC connection to the relay user equipment based on the RRC connection request message.