Forward looking infrared target recognition is key technology in precision-guided weapon. In practical application, it is likely to cause wrong matching because of discrepancy of scale and angle between template and real images. In order to solve problem mentioned above, A forward looking infrared target recognition algorithm based on edge′s affine invariant coordinate. Establishing coordinate system based on regional centroids of curvic edge. Coordinates of edge points is affine invariant in the established coordinate system. Taking the set of edge points′ coordinates as edge descriptor and similarity of edge is measured by average hausdorff distance. Wrong matchings are excluded with the help of relative locations among edges and forwarding looking infrared target robust recognition is implemented. Compared with two recognition algorithms based on gray template and edge template, recognition rate and robustness of proposed algorithm are all improved through three videos.