Abstract: Most of the studies on cognitive radio cooperative spectrum sensing algorithm using clustering thought each cluster participated collaboration equally,without considering the impact of different declines which clusters experienced to the verdict.To address this issue effectively,basing on clustering optimization cooperative spectrum sensing algorithm was proposed.The algorithm used energy saving cluster sense mechanism,fully considered the path loss and fading on the detection performance.Under the premise of meeting false alarm and detection rate,this scheme is not only simple in algorithm,but the stability of the system can be significantly improved by the results of the clustering. Therefore,it can effectively improve the spectrum sensing efficiency in the case of the complex channel environment.