Abstract: In order to reveal the difference in the effect of different reconstituted soil ratios and different vegetation growth grade on the moisture content of reconstituted soils, the most suitable ratio of reconstituted soil materials is explored.This paper takes the dump in the Shengli Mining Area of Inner Mongolia as the research area, surveys and samples the reconstructed soil reclaimed land, uses the one-way analysis of variance to analyze the difference in the field soil moisture content of the reconstructed soil, and discusses the reason of differences.The results show that under different vegetation growth grade, the soil moisture content is relatively strong when the soil reconstruction method is rock and soil stripping∶coal gangue∶fly ash=3∶4∶3.When the soil reconstruction method is the same, the soil moisture content under different vegetation growth grade is not completely affected by vegetation growth grade.When the soil reconstruction method is rock and soil stripped material, the soil moisture content of field 1 (on the ploughing target once in 15 days)and field 2 (one plowing target once in 30 days)is better when the vegetation growth grade is 1 and 2.When the soil reconstruction method is rock and soil stripping material∶coal gangue=2∶3, field 3 (once the ploughing target in 60 days)and field 4 (plowing and planting alfalfa that year)is better when the vegetation growth grade is 3.When the level is 3, the soil moisture content is better; when the soil reconstruction method is rock and soil stripping∶coal gangue∶fly ash=3∶4∶3, field 1 (on the ploughing target once in 15 days)and field 3 (on the ploughing target once in 60 days)had the best soil moisture content when the vegetation growth grade is 3, field 2 (on the ploughing target once in 30 days)and field 4 (plowing and planting alfalfa that year)had the best soil moisture content when the vegetation growth grade is 1.The study of the different proportions of coal gangue, fly ash and rock and soil stripping material as topsoil replacement materials provides support for reclamation work in mining areas where topsoil is scarce, as well as a reference for ecological restoration projects in grassland open-pit mining areas around the world.