The invention relates to an image identification based leucoderma vitiligo evaluation method, especially to a method for analyzing the change trend of the skin damage area of a vitiligo portion beforeand after treatment of a leucoderma patient via an image identification technology, belongs to the technical field of skin damage area layering and measurement, and aims at overcoming disadvantages of a present vitiligo area measurement method. The area of leucoderma vitiligo quantitatively in a novel image identification method, the area of the vitiligo and pigmentation in the surrounding is layered and analyzed statistically, and a leucoderma diagnosis and treatment effect is evaluated in a detailed way. According to the method, it is only required to shoot an image and upload the image toa computer, a system identifies the boundary of the vitiligo and the pigmentation area in the surrounding automatically, the area is layered, the area and pixel value are calculated, and the method provides convenience for evaluation by clinical doctors and guidance for leucoderma treatment.