Mekong delta has been well known for rice production of Viet Nam and had great contribution of rice export of Viet Nam and for acid sulfate and alluvial soils. Greenhouse gases emission from rice has been raised for its contribution to global warming. The technique of An Giang alternate wetting and drying (AAWD) has been recommended used for reduction of greenhouse gases. An experiment was set up with 3 factors of water management (AAWD and CF-continuous flooding), soil type (acid sulfate and alluvial soil) and seasonal effect (Spring Summer, Summer Autumn and Winter Spring) for collecting emission of CH₄, N₂O and rice yield. The CH₄ emission was less in the AAWD 2.76 mgCH₄.m^-2.h^-1 than in the CF 4.66 mgCH₄.m^-2.h^-1 (p < 0.05). Also, the rice yield was 5.87 ton.ha^-1.season^-1 for AAWD and higher than 4.80 ton.ha^-1.season^-1 for CF (p < 0.05). The soil type did not affect the greenhouse gases emission and the rice yield. The N2O emission was very low and variation. The AAWD should be applied broadly to all the area of rice production in the Mekong delta due to its less greenhouse gases emission.