Abstract: The traditional denoise techniques ability would be quickly descend when it can’t get the precise estimation of the noise spectrum.In this paper，a speech enhance technique is proposed which analyzes the speech components and noise components first and then deals the different frames with different levels of suppression methods，has a supper enhance effect when working under a poor estimation of noise spectrum condition.Extensive objective experiments shows that，after enhancement，the residual noise is further suppressed by the proposed approach comparing with the LSA estimator.