The CO₂ emissions under different cultivation periods and fertilizer types in paddy in Yanbian of Chinawere investigated in this paper. The results showed that the emissions of CO₂ were different in different reclamationtimes’ paddy. The CO₂ emissions in 80 a were higher than that in 120 a paddy indicating that the CO₂ emissions de-creased with the increasing of the reclamation times. The season character of CO₂ emissions was affected by fertiliz-er types applied into the paddy. The organic fertilizer could improve the rate of CO₂ emission at the tillering stageand mature stage of rice in paddy. The chemical fertilizer could improve the rate of CO₂ emission at the tilleringstage, ending of booting stage and mature stage of rice in paddy, and the application of organic fertilizer with chemi-cal fertilizer could improve the rate of CO₂ emission at tillering-jointing stage of rice in paddy. The mean emissionsof CO₂ per month were 229.60 g·m^-2 for organic fertilizer, 209.49 g·m^-2 for organic with chemical fertilizer and137.14 g·m^-2 for chemical fertilizer in paddy, respectively. The organic fertilizer could promote obviously emissionof CO₂ in Yanbian paddy.