Chongming Dongtan is one of the important transit points of Asia-Pacific Flyway, as well as a key coastal reclamation area in Shanghai. As a kind of artificial wetland, rice (Oryza sativa) paddy-field is widely distributed in this area and the main goal of restoration management, it′s necessary to find out whether the paddy-field is attractive to the waterfowls. In our study area, there are two different manage patterns (traditional and mechanized) of rice paddy-field. The traditional paddy-field samples region located in Chongming Dongtan National Nature Reserve (Fig. 1), composed of rice paddies and diversion trench, and farming in traditional manual administration with low density of cultivation. Traditional manage patterns rice paddy retained some rice and guarantee water conditions with the depth of 0.5﹣15 cm in winter. Mechanized manage pattern rice paddy sample region located in Yaoquan farm (Fig. 1), a typical coastal farmland ecosystem, managed in large scale mechanization farm mode, with high density cultivation. It is also composed of rice paddies and diversion trench. Mechanized manage pattern rice paddy-field is normally abandoned or planted as rotation in winter, with no water in rice paddies. Quadrat methods were taken to measure the differences of waterfowl diversity and habitat factor of two patterns of rice paddy in winters of 2013 and 2014, and we tried to find out which manage pattern of the rice paddy would attract more waterfowls and analyzed the environmental factors impacting the waterfowls′ distribution. During the two-year investigation, up to 1 795 waterfowl individuals were recorded, subordinated in 5 orders, 7 families and 18 species. In traditional manage pattern of paddy field, there were 1 756 waterfowl individuals subordinated in 5 orders, 6 families and 17 species, and the dominant species were Common Teal (Anas crecca), Spot-billed Duck (A. poecilorhyncha), Spotted Redshank (Tringa erythropus). In mechanized manage pattern of rice paddy, 39 waterfowl individuals were counted, subordinated in 4 orders, 5 families and 6 species, and the dominant species were Little Grebe (Tachybaptus ruficollis) and Northern Lapwing (Vanellus vanellus). T-test analysis indicated that firstly the paddy fields under traditional manage pattern performed better than another kind of fields in terms of abundance, richness of waterfowls, and secondly the paddy fields after transformation in 2014 performed better effect of waterfowl attraction than the ones in early transformation in 2013. Linear Regression (Backward Elimination) showed that the proportion of open water area being the most important factor to influence waterfowl species and abundance. Our study suggested that hydrological condition of rice fields is the main factor of attracting waterfowls in winter, and it is important for waterfowl biodiversity conservation.