The article " Application of High-speed Colloid Mill and High-pressure Homogenizer in Dye Processing " introduces the working principle of high-speed colloid mill and high-pressure homogenizer, and compares and analyzes the test results of the two, and gives examples of actual use in production. In addition, the practical formulations of disperse dyes and vat dyes are suggested, as well as the introduction of dispersants and processing aids. The selection of appropriate dispersants and other related auxiliaries can effectively improve the quality of commercial dyes.