[Objective] To calculate the benefits and cost of four green water management measures, in order to provide a new reference pattern for ecological restoration of Xixi watershed, and provide support for improving water resources management mechanisms. [Methods] Taking Xixi watershed of the Jijiang basin as the study area, four green water management measures including stone lines, bench terraces, contour tillage and mulching were simulated by soil and water assessment tool (SWAT) model. The benefits of four measures in increasing green water, soil conservation, water quality protection and agricultural income were calculated, and the benefit and cost of each measure was analyzed. [Results] ① The benefit-cost ratio of stone lines, bench terraces and contour tillage was 19.52, 13.03 and 6.98, respectively, which were far greater than 1, so those three green water management measures were suitable for popularization and application in Xixi watershed. The average benefit-cost ratio of the three measures was 10.18, and the average cost of the three measures in Xixi watershed was 3.97 million RMB per year, and the average benefit of that was 40.47 million RMB per year. ② The benefit-cost ratio of mulching was only 0.63, so it was not suitable for application in the study area at present. [Conclusion] The environmental and economic benefits of stone lines, bench terraces, contour tillage are good and have a good application prospect. Further exploration should be made to reduce the cost of mulching, and the financial subsidies are also need to be provided, so as to promote the application of the green water management measures in the study area.