A base station handover method for a communication system of a long term evolution network, comprising: a serving base station triggering a Coordinated Multi-Point, CoMP, operation according to information reported by a user equipment, and the serving base station adding context information of the user equipment to a target base station through an interface between base stations; the target base station requesting a Mobility Management Entity, MME, to update a coordinated set, and adding context information of the target base station into the MME; the MME triggering a bi-casting operation to a Serving GateWay, SGW, and notifying the SGW to store two communication routes; the SGW communicating with the serving base station and the target base station after the triggering of the CoMP operation and the bi-casting operation is completed; and the serving base station interacting with the user equipment to hand over the user equipment from the serving base station to the target base station; wherein, after the SGW communicates with the serving base station and the target base station, the method further comprises: in a downlink, after receiving data transmitted by the SGW through bi-casting, the serving base station and the target base station transmitting the data to the user equipment on a same time-frequency resource through CoMP; and in an uplink, the serving base station and the target base station receiving the data of the user equipment in coordination; and after the handover is completed and before the bi-casting operation is released, releasing the CoMP operation. a serving base station triggering a Coordinated Multi-Point, CoMP, operation according to information reported by a user equipment, and the serving base station adding context information of the user equipment to a target base station through an interface between base stations; the target base station requesting a Mobility Management Entity, MME, to update a coordinated set, and adding context information of the target base station into the MME; the MME triggering a bi-casting operation to a Serving GateWay, SGW, and notifying the SGW to store two communication routes; the SGW communicating with the serving base station and the target base station after the triggering of the CoMP operation and the bi-casting operation is completed; and the serving base station interacting with the user equipment to hand over the user equipment from the serving base station to the target base station; wherein, after the SGW communicates with the serving base station and the target base station, the method further comprises: in a downlink, after receiving data transmitted by the SGW through bi-casting, the serving base station and the target base station transmitting the data to the user equipment on a same time-frequency resource through CoMP; and in an uplink, the serving base station and the target base station receiving the data of the user equipment in coordination; and after the handover is completed and before the bi-casting operation is released, releasing the CoMP operation. in a downlink, after receiving data transmitted by the SGW through bi-casting, the serving base station and the target base station transmitting the data to the user equipment on a same time-frequency resource through CoMP; and in an uplink, the serving base station and the target base station receiving the data of the user equipment in coordination; and after the handover is completed and before the bi-casting operation is released, releasing the CoMP operation.