介绍了一种新的变步长LMS自适应滤波算法。该算法具有较快的收敛速度和较小的失调，并且他不受已经存在的不相关噪声的干扰。-This paper introduces a new variable step size LMS adaptive filtering algorithm. That the algorithm has a faster convergence speed and a smaller offset, and he is not already in existence are not related to noise.