Abstract:in this article,the composition and phase of jarosite was analyzed, the comprehensive utilization of jarosite was analyzes and summarizes,and the characteristic of the high temperature roasting decomposition、acid leaching、alkaline leaching、new idea of treating with jarosite and industrial application was introduced. The researcher pointed that coprocessing jarosite with other industrial waste slag is conducive to process jarosite and other slag in harmless、reclamation and reducing quantity method.