Abstract: The towing operation mode results in dislocation and distortion of SSS images,as well as creating difficulties for image mosaicing by coordinates,and target recognition and determination.Therefore,this paper proposes an image segmented mosaic method based on corresponding features on the seabed.Through preprocessing of side scan sonar image,segmented matching by mutual features,and image fusion in the public coverage area based on wavelet transformation,this method can correctly fuse adjacent SSS images,going a,long way toward solving the problem of dislocation and distortion found in the traditional methods for image mosaic.A test verifies the effectiveness of the proposed method.