In order to effectively eliminate the speckle noise interference of the laser radar image, it is difficult to gain better result by a single filter algorithm, and a fusing filtering algorithm of laser radar image based on grads image method was proposed. After the character of the noise of the radar image was analyzed and the advantages of Lee filtering and wavelet filtering was integrated, the image gradient image was used to determine the point belongs to edge region or to the signal region. The result of wavelet filtering was adopted if the point in the edge region, otherwise the result of Lee filtering was selected to achieve the best filtering effect. The simulation results show that the algorithm has strong speckle noise suppression capability, and it can obtain better effect on both noise filtering and image information holding when the new algorithm is used.