Abstract: The content of beneficial trace elements in soil is affected by many factors. According to different geological background characteristics in Qianshan County, the soil parent materials could be divided into seven types, This paper conducts a land quality geochemical investigation on different types of soil and soil parent material, and the result of statistical analysis of 8 116 soil samples showed that no matter in what kind of parent material, the average content of Cu and Zn in tidal soil was significantly higher than that in other soil types, and the average content of Mo and Se in brown soil was also significantly higher than that in other soil types. In the same soil type, the content of trace beneficial elements in different parent materials was different, while in different soil types, the content of beneficial trace elements in the parent material of the same soil tends was same Under the condition of in-situ weathering, the soil parent material comes from the weathering of bedrock in the geological background area, and the abundance and deficiency of beneficial trace elements in the soil depends on the type of bedrock. However, under the condition of non-in-situ weathering, the content of various soil elements in the parent materials of soil, such as river alluvial materials, varies greatly. The characteristics of beneficial trace element content in some soil types such as fluvo-aquic soil and brown soil are determined by soil types. In conclusion, the characteristics of beneficial trace element content in soil are comprehensively affected by the parent materials and soil types in Qianshan County.