With the character of the multispectral images to the same target, multispectral camera takes the important role in the remote sensing scopes. As the inevitable geometric optical distortion in the multispectral camera, which affect the obtained precision of the images of the ground target, the geometric characteristic calibration of the multispectral camera take the important effect on enhancing the quality of the images. The method adopts the geometric characteristic calibration with the standard gridding board, the autocollimation and high precision planar platform, this method has the strongpoint of the simple measuring elements, the intuitionistic experiment, and the high reliability in the result. Calibration results show that the focal calibration accuracy is less than 0.02 mm, the point calibration accuracy is less than 5.2 μm, and the method is fit for the request of the accuracy.