The results showed that coal gangue obstruction can greatly improve the soil properties of sandy land,such as the silt content and soil moisture can be sharply increased, the soil structure can be improved. The soil organic matter,total N,available P,K can be increased by 2.65,2.66,1.30 and 1.24 times of the control respectively. In addition,the size of the coal gangue has notable effects on the soil fertility and moisture.