Taking the batik of the ethnic minorities in Southwest China as an example, the paper studies the style and difference of the batik patterns. Which contuebutes to a comprehensive understanding of China's ethnic batik, then carries on the effective inheritance and development. Pattern is the minority batik label, in thes paper, and Miao, Yao, Buyi ethnic minorities' traditional batik patterns style is the main object of study. It makes the comparative study of similarities and differences between the batik pattern style of ethnic groups from the patterns of color, subject matter and composition. It indicates that the national traditional batik pattern colors are related to the traditional blue and white color, mixing with red, yellow and other color, while the difference is the color expression; each ethnic batik paterns theme has the different emphasis with their themes of the nature, geometry and two phase; Miao emphasizes in using composition techniques of symmetry and equilibrium. Yao is clear and simple different from the compositional style of Miao full smooth; Buyi is more using the plane composition changes, and harmonious, not restricted to space and time. At the same time, it explores the similarities and dkfferences in the factors affceting their style from the geographical and social cnvironment.