Abstract: Taking a low quality kaolin ore in Jiangxi as the research object, basing on the analysis of ore mineral composition, chemical elements and so on, a technological process of purification of kaoline and of comprehensive utilization technology of its tailings was put forward. By studing on the processing technology of raw ore, such as pulp purification, magnetic separation and chemical bleaching, highly processed products of kaoline was obtained. The content of kaolinite reaches 82%, the natural whiteness 79.8%, the burning whiteness 90.1%, and the content of Fe₂O₃ is reduced to 0.54%. Following by classification, grinding, flotation for tailings, two products namely muscovite and quartz can be obtained. The content of K₂O in muscovite obtained can reach 7.89% and the content of SiO₂ in quartz obtined reaches 97.78%.The mineral content of Muscovite reaches 85% and the mineral content of quartz reaches 96%, respectively. The technological process realizes the comprehensive utilization of the kaoline ore, and solves the problem of the low utilization rate of low quality kaoline ore and large accumulation of tailings.