Abstract: The methane release fluxes from paddies in complete rice growth period have been monitored in Wali County of Beijing City from 1990 to 1992. Different fertilizers were applied in the fields in order to test the effect of organic and chemical fertilizer on methane emission. The results show that average methane emission rate was 17. 6mg/m²·h under common managementl and exhibited a strong seasonal variation with maximum emission flux around Aug 15. The methane emission during the climax period accounted for more than 65% of the total methane emission in the whole year. Experimental results also show that animal manure enhances methane emission?ammonium sulfate suppresses the methane emission during its effective period. Intermittent irrigation seems to be one of the effective ways to reduce the methane emission from paddy fields.