Abstract: Integrated benefits of rice-duck complex ecosystem,including reduction of methane emission and other eco-economic benefits,were studied by adopting plot experiments.The results showed that compared with conventional paddy fields,the pattern of rice-duck ecological planting and breeding significantly reduced the total amount of methane emission from paddy fields,by 44.2% for early rice and 40.7% for late rice.Methane emission was higher from late rice fields than from early rice fields,in all treatments.At the same time,soil fertility and physical characteristics of the soil in the rice-duck complex ecosystem were both improved,and redox status of the soil was also markedly meliorated.What′s more,the direct economic benefit of the rice-duck complex ecosystem was higher than that of the conventional paddy fields.