Abstract: Based on the investigation and study of surface soil in eastern Lin’an area, Zhejiang Province, a piece of large-scale selenium-rich soils were discovered, and the distribution characteristics of selenium and influencing factors were summarized. The mean selenium content of surface soil in the study area is 0.38×10^-6, and selenium contents vary obviously with different soil types. Among them, the selenium content of the yellow soil is the highest, with an average of 0.58×10^-6. The probability accumulation diagram shows that the exogenous input components have little influence on soil selenium. The selenium contents of soil present a positive relation to the contents of V, Mo, Ni and Cr, and closely related to organic matters and soil pH values. The carbonaceous shale and siliceous rock of the Hetang Formation and carbonaceous shale of the Ningguo Formation are the important sources for selenium in the soils in the study area.