Abstract: In order to show more clearly the oceanic carbon distribation,cycle and the effects of ocean in greenhouse effect,the sources,distvibution and cgceing mechanism of oceanic carbon were intvoduced in this paper based on the investion of lavge amount of references The behaviour,transport and convertion of cavbno in ocean storage were revealed.And the change of CO₂ partial pressure in the suvfaceser,the exchange of CO₂ between ocea and atmosphere and oceanic absorption of CO₂ from atmosphere were also discussed。