Abstract: Coal Mine collapse basin was unused land, and it was natural constructed wetland model too. Fly-ash of coal as substrates used in constructed wetland systems and plant some aquatic macrophyte. Finally, it could developed constructed wetland, it is not only treatment well wastewater in coal mine collapse basin, and its effluent can be reused for irrigating water of main crops or retreated reused. Moreover, it could realized fly-ash of coal source be recycled and reused, simultaneous of constructed wetland treated wastewater in coal mine collapse basin and it could beautify environment, improving village environment and developing ecological income. Comprehensive factors were considered, it was feasible that wastewater in coal mine collapse basin treated by constructed wetland in Pingdingshan city.