Abstract: Datacolor 600 computer system and the relevant application technology were used in color measuring and matching of the master batch of three primary colors,and making of colored polyester filaments through melt spinning was realized with the master batch and the color effect of polyester filaments was infinite with this technology.The low-stretch high-tenacity colored interlaced yarns of specifications were made such as 166.7 dtex/48 f and 222.2 dtex/72 f used as embroidering threads that are characterized by improved softness,smoothness and strength,lowered production cost and more diversified varieties.