A method for processing failure of a handover to a Closed Subscriber Group, CSG, cell, characterized in that the method comprises: sending (201, 401, 501), by a source NodeB, or a source Radio Network Controller, RNC, or a source Home NodeB, HNB, a handover required signaling or a relocation required signaling for handing over to a target CSG cell; and receiving (206A, 204B, 202C, 406A, 404B, 402C, 502B), by the source NodeB or the source RNC or the source HNB, a handover preparation failure signaling or a relocation preparation failure signaling with non-member reason if a User Equipment, UE, to be handed over is not an authorized subscriber or a member subscriber of the target CSG cell, or the target CSG cell is not in an allowed CSG list of the UE to be handed over; and performing, by the source NodeB or the source RNC or the source HNB, handover failure processing operation after receiving the handover preparation failure signaling or the relocation preparation failure signaling with non-member reason, the handover failure processing operation comprising: starting, by the source NodeB, or the source RNC or the source HNB, a timer; and before the timer is overtime, preventing, by the source NodeB, or the source RNC or the source HNB, the UE to be handed over from sending the handover required signaling or the relocation required signaling to the target CSG cell; or preventing, by the source NodeB, or the source RNC or the source HNB, the UE to be handed over from sending the handover required signaling or the relocation required signaling to a target HNB cell with identical CSG Identity, ID. sending (201, 401, 501), by a source NodeB, or a source Radio Network Controller, RNC, or a source Home NodeB, HNB, a handover required signaling or a relocation required signaling for handing over to a target CSG cell; and receiving (206A, 204B, 202C, 406A, 404B, 402C, 502B), by the source NodeB or the source RNC or the source HNB, a handover preparation failure signaling or a relocation preparation failure signaling with non-member reason if a User Equipment, UE, to be handed over is not an authorized subscriber or a member subscriber of the target CSG cell, or the target CSG cell is not in an allowed CSG list of the UE to be handed over; and performing, by the source NodeB or the source RNC or the source HNB, handover failure processing operation after receiving the handover preparation failure signaling or the relocation preparation failure signaling with non-member reason, the handover failure processing operation comprising: starting, by the source NodeB, or the source RNC or the source HNB, a timer; and before the timer is overtime, preventing, by the source NodeB, or the source RNC or the source HNB, the UE to be handed over from sending the handover required signaling or the relocation required signaling to the target CSG cell; or preventing, by the source NodeB, or the source RNC or the source HNB, the UE to be handed over from sending the handover required signaling or the relocation required signaling to a target HNB cell with identical CSG Identity, ID. starting, by the source NodeB, or the source RNC or the source HNB, a timer; and before the timer is overtime, preventing, by the source NodeB, or the source RNC or the source HNB, the UE to be handed over from sending the handover required signaling or the relocation required signaling to the target CSG cell; or preventing, by the source NodeB, or the source RNC or the source HNB, the UE to be handed over from sending the handover required signaling or the relocation required signaling to a target HNB cell with identical CSG Identity, ID.