Abstract: Coal gangue is a waste, meanwhile it is a reuse of resource. Based on the analysis of coal preparation plant Muguajie and Antaibao coal gangue’s particle size distribution, Density composition，mineral composition, industrial analysis and associated minerals morphological characteristics and other aspects。According to the coal gangue’s characteristics, this paper aims to set up the technical scheme of upgrading and separation of coal gangue use, and form a complete set of coal gangue separation and upgrading technology.