The effects of photochromic dye concentration，spin-coated white material dosage and color-changing layer thickness on the color-changing performance were explored during the preparation of coated color-changing resin lenses. Taking the lens foundation color，photochromic depth and fading performance as indicators，it was found that the factors affecting the discoloration performance were dye concentration，white material dosage and coating thickness from large to small，among which the dye concentration had the most significant effect，and the increase of white material dosage was beneficial to all aspects of discoloration performance，and the dye concentration of 30%，the amount of white material 80% and the coating thickness of 10 μm were the preparation process parameters with the best comprehensive properties by orthogonal test. Under the preparation conditions，the light transmittance in the faded state was 93.4%，the light transmittance in the discolored state was 6.9%，and the semi-vision recovery time was 165.0 s.