The disclosure proposes a system and method for assisting a colorblind user. The system comprises: a perspective display device for displaying an electronic image and/or allowing the user to view an actual image through the perspective display device; an image acquisition device for acquiring an electronic image corresponding to an actual image which can be viewed through the perspective device; and a processing system for, when the current processing mode of the system is a first display mode, processing the electronic image acquired by the image acquisition device to obtain a processed electronic image, and superimposing the processed electronic image on an actual image viewed through the perspective display device in a way of being aligned with the actual image and displaying it; wherein the processing the electronic image comprises: conducting an HSV space transformation for a target part in the electronic image corresponding to an area of a color in the actual image which can not be distinguished.