Panorama vision is one of crucial technologies in computer vision, and the selection of projection model plays an important role in panorama. In order to decrease the horizontal line distortion which cylinder projection brings and make conjunction between different camera-images more smooth, a multi-plane projection technology based on cylinder projection is proposed for multi-camera panorama system. Firstly, the cylinder panorama image is constructed by cylinder projection. Then cylinder panorama is divided into several sub-images horizontally by image content. At last, all sub-images are projected by anti-cylinder projection and the horizontal line distortion in the final panorama is decreased. Experiments show that the projection method can improve the horizontal line curvature to no more than 0.002, meantime ensure the smoothness between two different image planes.