This paper proposes a method based on SIFT extraction the feature points for the image registration of different imaging mechanism.Information is obtained complementary between the images by multi-source remote sensing images to match in order to improve the accuracy of the information.The SAR image is characteristic of high resolution,all-weather,while the optical image has signal to noise ratio high and is accessed easily,Which matches that will increase the range of applications of remote sensing image.Experimental results shows that the SIFT algorithm to extract the same points of the SAR and optical images is feasible.Although matching results is not ideal,it provides a new idea for matching between SAR image and optical image.