In order to investigate the effect of long-term green manure cultivation on the composition,distribution andsequestration of the organic carbon in soil aggregates,six treatments are chosen for this research,namely,Cleantillage, Vicia sativaL.,RaphanussativusL.,ViciacraccaL.,ViciavillosaRoth,and Viciavillosavar.The result shows thatthe composition of organic carbon varies little in spatial distribution under clean tillage,however,compositions of boththe organic carbon and aggregate organic carbon are changed under green manurecultivation.At 0～20 cm soildepth, Viciavillosavar.has significantincreased,so does RaphanussativusL.at 20～40 cm soil depth and inparticular,thecontent of aggregate organic carbon of 5～ 0.25 mm in both of them increased most significantly.The composition of aggregateorganic carbon decreases with decreasing grade in all of the six green manurescultivation.The enrichment coefficient ofaggregate organic carbon is between 1.23 and 0.88 and it decreases with decreasinggrade.The treatments of EC of >1 mmare almost bigger than 1 and it means they are in the accumulationphase.The contributing rates of aggregate organic carbonof >0.25 mm is more than80%,ofwhich,the rate of >5 mm is the biggest one and the difference of it is great betweendifferent green manure.The contributing rate of aggregate organic carbon of 0.5～0.25 mm is the smallest ofall.Thesoil organic carbon content increases with increasing aggregate organic carboncontent.The soil organic carbon content hassignificantly positive relation with aggregate organic carbon of 5～ 0.5 mm under long-term green manurecultivation.Andthe increase of aggregate organic carbon of 5～ 1 mm has a great influence on the accumulation of soil organic carbon content so planting green manure promotes the sequestration of aggregate organic carbon in macro-aggregates.