Abstract: [Objective] This project aims to analyze the vertical distribution characteristics of Zhaosu grassland chernozem soil organic carbon content,carbon storage and density.[Method] Using Potassium dichromate external heating method to measure the soil organic carbon content in 0-100 cm soil depth at different altitudes and discuss their changes.[Result] Results showed that Ili Zhaosu grassland chernozem organic carbon content,carbon storage,carbon density revealed a trend of decrease with the increase of altitudes and the soil depths.Organic carbon content,carbon storage and density of 100 cm in the study area at the attitudes between 1,000-3,000 m were 64.70-616.78 g/kg,4.49 × 10-8-1.94 × 10-6 Pg/hm2 and 3.26-194.27 kg/m2,respectively.The typical grassland chernozem soil organic carbon content,carbon storage density and altitude were negatively correlated.(r =-0.92,-0.943,-0.95) and had significantly negative correlation with the soil layer thickness (r =-0.989* *,-0.968* *,-0.966 **).[Conclusion] Ili Zhaosu grassland chernozem soil organic carbon content,carbon storage and carbon density decreased with the increase of altitudes and depths in the profiles.