The whole area of soil and typical profiles in Jianshi County were used to analyze the characteristics of the content of selenium in different soil types， the distribution of the content of selenium in vertical soil profiles， and the correlation between the content of in soil and the physical and chemical properties based on the survey results of geochemical evaluation of land quality in Jianshi County， Hubei Province from 2015 to 2020 to study the characteristics and influencing factors of selenium enrichment in the soil in Jianshi County. Results showed that the content of Se in the soil in Jianshi ranged from 0.08 mg/kg to 64.20 mg/kg， with a mean of 0.94 mg/kg. In general， the content of Se in the soil in Jianshi reached the level of seleniferous soils. Among the main types of soil in Jianshi County， the content of selenium in red soil， brown soil and yellow soil was relatively higher than that in other soil types， and the content of selenium in purple soil was the lowest. The depth of soil profile had a significant effect on the content of selenium in soil. The content of selenium in soil was gradually decreased with the increase of the depth of soil profile， consistent with the change trend of organic matter in soil. The content of SiO₂， Al₂O₃， TFe₂O₃ and CaO in the soil was significantly positively correlated with the content of selenium in the soil. In addition， the content of selenium in the soil was strongly correlated with the content of Cr， Cd， Ni， and Mo in the soil， indicating that the source of Se in the soil is closely related to organic matter in the soil. At the same time， the content of available Se in soil was significantly positively correlated with the pH in soil， indicating that increasing the pH in soil is an effective approach for improving the bioavailability of Se in soil.