Various laser process parameters work together to influence the results of laser color marking,and the interrelationship between different parameters is complex. In order to obtain better colors and a more complete laser coloring chromatography based on TA2titanium board,a MOPA fiber laser with a wavelength of 1064 nm and maximum output power of 20 W is selected for the experiment. The color and visible spectrum of the colored samples are collected and analyzed by spectrophotometer. The results show that by simplifying the relationship between the parameters and varying the dQ size by adjusting the scanning speed,line spacing and power change dP based on the color difference generated by the change of energy cumulative fluence dQ,richer colors can be obtained.