This article mainly studies the semantic systems of commonly used color words in Yuxin’s Pianfu. On the basis of the theory of category, color words can be divided into green, yellow, red, white and black five categories.First of all, this paper briefly analyzes the total number , word forms and combinations of profiles of color words. The study finds that Yuxin prefers to use bright warm colors, the most favorite colors are the “white” category and the “red” category.Secondly, the article focuses on the semantic systems of the “green” and “spring color”of the “green” category, the “yellow” and “gold” of “yellow” category,the “red” and “cinnabar color” of “red” category, the“white”and“gray” of “white” category,the “Xuan” and “black” of “black” category.Finally, the article divides the semantic of a prototype color word into prototype semantic and nonprototype semantic, and each category has a prototype color word, the article emphatically analyzes the producing mechanism of〖JP2〗 nonprototype semantic of prototype color words, mainly including the three mechanisms such as metaphor, metonymy and sociocultural bestowal.