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In order to solve the problem of dynamic deformation measurement for aircraft structural parts in flight test,a method based on image is presented,and the key technologies involved are studied. 10-parameter model and the dynamic camera calibration algorithm are adopted to compensate the camera system error. After that the camera calibration re-projection error is less than 0.03 pixel.Using Coded marks as the surveying marks,the efficiency of image automatic recognition and matching are improved. The measurement accuracy of key points deformation is 0.05 mm/m using intersection measurement. The experiment results show that the proposed method in this paper can satisfy the demands for aircraft structural parts dynamic deformation measuring in flight test.