Aim at the limitation of target tracking with single sensor,a Dual-Band target tracking method based on image fusion is presented.The wavelet transform is adopted to decompose the input images.For the purpose of fusion which is to satisfy the stabilization and Real-time of target tracking,it mainly considers the detail information of target,such as the edge information.So the low frequency coefficients are set to be zero,the high frequency coefficients chooses larger absolute value of Wavelet coefficient.Then the Mean shift algorithm is used for fused image to track target.A group of experimental results demonstrate that the presented algorithm can track target steadily without delay.Compared with single sensor image,the proposed algorithm demonstrates better performance.