With the development of synthetic aperture radar(SAR) technology，SAR image data processing and image classification and recognition has become a hot research topic in recent years. Due to the inherent characteristics of SAR image, the SAR image matching classification can not directly use optical remote sensing image matching. According to the characteristics of SAR image itself, and puts forward on the basis of the characteristics of image characteristics remain the same in, as the two images of reference information for registration. The method selects a reference point that represents some features in the image, feature extraction, using the feature to calculate the spatial transformation parameters. In this paper, a classification method based on SIFT feature matching is used to classify the aircraft targets, the simulation results show that the classification of three types of aircraft, this paper adopts the methods have achieved good matching results, proved the effectiveness of the algorithm.