Abstract: This study dealt with the effects of using four kinds of fertilizer application at the same effective fertility level under the normal late rice field management to pad- dy-fields in Guangzhou area on methane emission flux.The result showed that methane emitted significantly in the early growth phase of late rice in paddy-fields,in paddy-fields water immersion was a necessary condition for methane emission,no significant methane emitted in the dry-wet management period;methane emission flux in fields with organic manure applied was higher than that in fields treated with chemical fertilizers;higher soil temperature facilitated methane emission.