A handover processing method, comprising: sending, by a first source base station, a handover request message to a target base station, to make a request for a handover of a user equipment from the first source base station and a second source base station to the target base station; receiving, by the first source base station, a handover request acknowledge message sent by the target base station; and sending, by the first source base station, a handover command message to the user equipment, to notify the user equipment to hand over from the first source base station and the second source base station to the target base station; wherein after the receiving, by the first source base station, the handover request acknowledge message sent by the target base station, the method further comprises: sending, by the first source base station, a handover execution notification message to the second source base station, for notifying the second source base station to start executing a handover operation; and receiving, by the first source base station, a handover execution notification response message sent by the second source base station, wherein the handover execution notification response message comprises: serial number, SN, status transfer information corresponding to at least one radio access bear, RAB, served by the second source base station, and/or a data packet, in need of forwarding, corresponding to at least one RAB served by the second source base station. sending, by a first source base station, a handover request message to a target base station, to make a request for a handover of a user equipment from the first source base station and a second source base station to the target base station; receiving, by the first source base station, a handover request acknowledge message sent by the target base station; and sending, by the first source base station, a handover command message to the user equipment, to notify the user equipment to hand over from the first source base station and the second source base station to the target base station; wherein after the receiving, by the first source base station, the handover request acknowledge message sent by the target base station, the method further comprises: sending, by the first source base station, a handover execution notification message to the second source base station, for notifying the second source base station to start executing a handover operation; and receiving, by the first source base station, a handover execution notification response message sent by the second source base station, wherein the handover execution notification response message comprises: serial number, SN, status transfer information corresponding to at least one radio access bear, RAB, served by the second source base station, and/or a data packet, in need of forwarding, corresponding to at least one RAB served by the second source base station. sending, by the first source base station, a handover execution notification message to the second source base station, for notifying the second source base station to start executing a handover operation; and receiving, by the first source base station, a handover execution notification response message sent by the second source base station, wherein the handover execution notification response message comprises: serial number, SN, status transfer information corresponding to at least one radio access bear, RAB, served by the second source base station, and/or a data packet, in need of forwarding, corresponding to at least one RAB served by the second source base station.