In order to explore the effects of different winter crops and paddy-upland rotation on rice paddy yield and greenhouse gas emission reduction,cropping patterns were set up as Chinese milk vetch-early rice-late rice ( CRR), Chinese milk vetch-rice-sweet potato‖soybean ( CRI), rape-late early rice-late rice ( RRR), rape-rice-sweet potato‖soybean ( RRI), and potato-early rice-late rice ( PRR) . Based on the effects of different water-and-dry crop rotation patterns of different crops in winter on rice yield,global warming potential ( GWP) and greenhouse gas emission intensity ( GHGI), the annual emission flux of CH_4 and N_2O in paddy fields was determined by static dark box-gas chromatography. The results showed that different crops in winter could increase the early rice yield,but they had little effect on the late rice yield,among which Chinese milk vetch had the best effect on early rice yield. And CRI treatment was 1.73%,12.08%,and 7.48% higher than other treatments,respectively. The yield of water and drought rotation treatment was higher than double-season rice treatment,and late rice yield of RRI treatment was 5.37%,22.54%,29.83% and 27.24% higher than other treatments,respectively. Different crops in winter had no significant effect on CH_4 and N_2O emissions ( P>0.05), however,the paddy-upland rotation significantly increased N_2O emissions and reduced CH_4 emissions ( P<0.05) . Among the 5 planting models,RRI treatment had the lowest GWP,and was 25.54%,29.76%,and 20.78% lower than CRR,RRR,and PRR treatments,respectively ( P<0.05) . The GHGI of RRI treatment was the lowest,which was 32.51%,18.18%,30.77%,and 20.59% lower than other treatments ( P < 0.05), respectively. In summary,the effect of RRI treatment on increasing crop yields and reducing greenhouse gas emissions from rice fields was the best. The results provided a theoretical basis for high yield and greenhouse gas reduction in the double-crop rice paddy area in the Middle Reaches of the Yangtze River.