The present paper gives the composition of carbohydrates in some soil groups and its distributions in different organic fractions and in soil profile.Soil samples used inelude alpine steppe soil,brown podzolic soil,prarie soil,dark chestnut soil,salinized steppe soil,black loam soil,laterite and paddy soil.It was found that all the surface soils examined under natural vegetation,irrespective of their divergent vegetative and climatic conditions,resembled each other in the pattern of component sugars.In general,the relative concentration of glucose was slightly higher than that of other sugars,the other sugars decreased in the following order:galactose,xylose-arabinose,rhamnose.The relative concentration of mannose though varied in different soil types,was usually higher rhan that of xylose and lower than that of glucose.