In order to improve the efficiency of feedback resource in the uplink channel, phase feedback in coordinated multiple point （CoMP） systems with multicell overlapped was considered and the optimal solution for adaptive limited feedback in users was derived in this paper. The user could decide the allocations of the feedback bits according to the transmission channel gain, the interference channel strength, and the relative phase information of the received signals from different base stations. Besides, preadjustment of the phase in precoding design at the base stations was employed, which helped to achieve coherent combining of received signals at the user side. Simulation results show that the proposed scheme remarkably improves the system throughput performance without increasing the feedback overhead.