According to Guide of Carbon Sequestration Measurement and Monitoring of Afforestation Project of Green Carbon Fund in China.Carbon sequestration amount of Xanthoceras sorbiforlia forest planted was researched in Erdos City of Inner Mongolia.The results showed that Xanthoceras sorbifolia carbon content of every organs as follows.Carbon content of leaf,root,bark is 54.72%,45.26% and 54.58% respectively.After 20 years plantation of Xanthoceras sorbiforlia forest,the carbon reserve would be 81 911.53 t totally.In the process of plantation and tending,as a result of transport of seedling and fruit,water,fertilizer and other activities,carbon emission would be 834.60 t,and the net carbon sequestration would be 81 077 t.