Abstract:The availability of trace elements in soil has an important effect to crops growth and the quality characteristics of agricultural products. In this paper, the availability of trace elements in the soil of Tailai basin has been introduced, and the effects on the availability of trace elements from the percent of organic compounds and soil pH in the soil of Tailai basin has been analyzed. It is showed that the contents of effective copper ,boron and zinc will increase accompanying with organic matter content in the soil. The content of effective boron will increase accompanying with the increasing pH value in the soil, and the content of effective iron, manganese and molybdenum will reduce gradually accompanying with the increase of pH value.