Although the modified constant modulus algorithm(MCMA) can correct the phase rotation,it is bothered by relatively high steady-state mean square error(MSE).In this paper,an improved MCMA blind equalization algorithm which incorporates a stop-and-go technique is proposed.First,a new error control function is obtained by introduction of the local information.Then,the idea of reducing wrong equalizations in stop-and-go algorithm is used to further lower MSE through synchronizing the direction of the new algorithm with MCMA.The simulation results demonstrate that the proposed algorithm not only have the same convergence rate,also lower the inter-symbol interference by 10 dB compared with MCMA.