Abstract: Application of the computer color measuring system used in the process of aluminum coloring was emphatically researched. To objectively evaluate the quality of the products, the values about K/S and color difference were calculated. Through analyzing each factor such as dyeing temperature, the thickness of the oxidized-layer, pH value as well as dyeing time, the optimum condition is defined for the processing technology. Satisfactory products were obtained in solution with pH of 5, dyed at 60°C for 30 min and the film thickness was controlled within 16±0.5 μm. The results showed that the best K/S value of the aluminum after dyeing treatment had reached 4.24 and fading color fastness was 4-5 level to dry rubbing, 3-4 level to wet rubbing while staining color fastness was 4 level to dry rubbing, 3 level to wet rubbing.