Abstract: In OFDM-MIMO systems, the traditional Zero Removal Channel Shortening Equalizer (ZR-CSE) does not consider the equalization of noise in the process of channel shortening, and may even amplify the noise. In order to solve the above problems, this paper presents a Min Zero Removal Channel Shortening Equalizer (CSE-MZ )algorithm through theoretical derivation and simulation verification of the dynamic changes of the signal-to-noise ratio gain and noise gain of the receiver with the removal zeros. Firstly, all the inner zeros of the unit circle of the channel state polynomial are obtained by estimating the matrix. Then, the length and connection coefficients of the feedback filter(FBF) are optimized by selecting a certain number of smaller zeros as the connection coefficients of the FBF, and the design process is simpler. Finally, a large number of numerical simulations verify the feasibility of the proposed algorithm.