An automatic image mosaic method based on invariant moments of interest points was proposed. Firstly the arris corner detector is used to gain the interest points,and the moment invariants to traslation,rotation and scale defined on the interest point neighborhood are computed. Then by comparing the Euclidean distance of these invariant moments,the initial feature points pairs are extracted,and the spurious feature points pairs are by eliminated by geometric transform model. Finally image sthtching with the correct mapping model is realized. Experimental results demonstrate the proposed algorithm is robust to translation,rotation and slight scaling.