Abstract: Using Landsat 5 data from 1987 to 2012, and Landsat 8 data from 2013 to 2017, the spatio-temporal characteristics and changing trends of net primary productivity (NPP) in Yuehai Wetland from 1987 to 2017 were analyzed.At the same time, based on high-resolution (Gaofen) data (GF2), the spatio-temporal changes of NPP with 4 m resolution from 2015 to 2017 were estimated and compared with Landsat results.The results show that the NPP in 2002 was the lowest with a value of 691.11 g·C·m^-2, and the average NPP increased firstly and then decreased from 2003 to 2007.After 2008, the average NPP tended to be stable.Reeds are distributed widely in the central and surrounding areas in Yuehai Wetland from the 1980s to the 1990s.And then reeds are concentrated in the northeastern region of the wetland from the 2000s to the 2010s.NPP of Yuehai Wetland changed significantly from 1987 to 2017.The area in the northeastern region of Yuehai Wetland is a decreasing trend.Comparing the average NPP retrieved by GF2 and Landsat in Yuehai Wetland from 2016 to 2017, it can be found that there is no significant difference between them and their changing trends are consistent.