An automatic method of making color coded synthesized Fourier transform hologram is proposed. The images of the three-dimensional model are processed by the principle of synthesized holography and the pseudo color coding method. The processed images are displayed by a spatial light modulator (SLM). The light, through the SLM and the Fourier transform optical path and the lens with a large numerical aperture, forms a point pixel on the spectrum plane. By a computer and the program control systems, a large-format color-coded large-viewing angle rainbow hologram is produced pixel by pixel automatically.