Broadband channel mismatch correction method allows the channel amplitude and time delay error to achieve the overall best, but the mismatch of the channel amplitude and time delay in the practical application environment requirements are different, the overall optimum can not reach a satisfactory channel correction results. This paper research a channel correction way of improving interior penalty function based on a nonlinear optimization method. The experimental results show that this method can effectively control channel time delay inconsistencies within the scope of needs, and can control the amplitude of the mismatch in a smaller range, provides a new thought for channel correction.