Abstract: Soil magnetism survey is a new geophysical method that developed in recent years.The method can be used to solve some geological problems by measuring the magnetism of soil sample.This paper discusses the feasibility of soil magnetism survey in the study on ore-forming environment of leachable sandstone uranium deposit.The anomaly characters of soil magnetism at the oxidation zone front are summed up by the application research for Dongsheng area, Inner Mongolia.