Abstract: Based on the least-squares method,the area of Lunar Sinus’gravity field is recov-ered using the line-of-sight acceleration data from Lunar Prospector extended mission.Bycounting the least-square residuals and calculating the power spectrum,as well as comparingthe gravity model of line-of-sight with the high resolution gravity models,such as SGM150j,GLGM3,LP150Q,the feasibility and reliability of the line-of-sight method in improving lu-nar local gravity models is verified.The correlation between topography and gravity of Sinusis also briefly analyzed.