Studies were made on the regularities of content and distribution of boron in soils of China.The total boron content varies from.trace-500ppm,with an average.of 64ppm.There are two markedly different regions which are differentiated by boron content in soils,i.e.soils rich in boron and those poor in this element.The former includes soils of Tibet and other arid inland as well as saline soils; while the later includes the acid soils of South China,e.g.red earth,lateritic red earth,yellow earth,purplish soil,etc,Various loessial soils have a medium amount of total boron and low water-soluble boron.Boron content of paddy soils varies greatly soil acidity exerts a prDfound influence on availability of this elements.