The invention discloses a method for planting rice in saline-alkali soil to reduce salt and increase yield. The method includes the following steps: (1) soil preparation and fertilization: adding gypsum, a coated slow controlled release fertilizer and a humic acid modified fertilizer to saline-alkali soil and ploughing; and (2) planting: adopting single row and single irrigation in the rice field,and planting saline-alkali-resistant rice seedlings in the saline-alkali soil treated in the step (1) after 5 to 10 days; and then managing the paddy fields according to the daily management methods.According to the method, double measures of rice planting and fertilizer application are adopted to improve soil quality and reduce soil salinity, and one-time fertilizer application is adopted to improve fertilizer utilization rate and reduce non-point source pollution caused by fertilizer leaching. The method can not only improve the quality of the saline-alkali soil but also achieve the purpose of increasing production.