In this stady,all processes required to simulate the image reconstruction of a computer-generated hologram were conducted.Simulation of the reconstructed image of a full color rainbow hologram was successfully carried out.In a previous study,the reconstructed wavelength of the light used in the simulation consisted only of RGB.Therefore,the reconstructed image of white light was only possible when the simulation was done in the proper observation position.When the observation position was moved,the simulation could not be done.In this paper,we propose a method of continuous wavelength simulation that makes it possible to simulate a reconstructed image from any observation position.