Abstract: To understand the difference of nitrogen reduction effects and economy among different cropping patterns, experiments were conducted at Dingxiang rice farm in Panjin from April to October in 2016. Nitrogen reduction effects and economy of cropping patterns of conventional management (CM), organic management (OR) and low chemical management (LC) were evaluated by ways of comparative trial, cost benefits analysis and scenario analysis. The results showed that OR produced the lowest total nitrogen loss, which was 1.94 kg/hm², while the total nitrogen loss of LC was higher than OR, which was 3.67 kg/hm². The total nitrogen loss of CM was the highest, which was 5.87 kg/hm². Moreover, the economic net present value (ENPV) and economic net present value rate (ENPVR) of OR were the highest over the three different cropping patterns. The ENPV and ENPVR of OR were respectively 23, 302.53 RMB/hm² and 1.13. While the ENPV and ENPVR of LC were lower than OR, which were respectively 15, 310.42 RMB/hm² and 1.06. The ENPV and ENPVR of CM were the lowest, which were respectively 14, 855.92 RMB/hm² and 0.93. When the price of rice rose by 5%, the ENPV and ENPVR of OR would be still the highest, which were respectively 21, 218.14 RMB/hm² and 0.86. The ENPV of OR was 7, 425.26 RMB/hm² and 7, 972.01 RMB/hm² higher than ENPV of LC and CM. And the ENPVR of OR was 0.07 and 0.17 higher than ENPVR of LC and CM. When the price of rice declined by 5%, the ENPV and ENPVR of OR would be still the highest, which were respectively 16, 872.82 RMB/hm² and 0.68. The ENPV of OR was 6, 030.87 and 6, 715.17 RMB/hm² higher than ENPV of LC and CM. And the ENPVR of OR is 0.06 and 0.15 higher than ENPVR of LC and CM. The study indicated that the nitrogen reduction effects and economic benefits of OR were higher than those of LC and CM.