This paper based on panel data of 11 provinces (cities) in Yangtze river economic zone from 2008 to 2017, uses non-diametric Super-SBM model to estimate the water resources welfare performance of provinces (cities) in Yangtze river economic zone, applies non-parametric Kernel core density and standard deviation ellipse model to study the dynamic evolution of water resources welfare performance, and employs overall Morans index and spatial panel model to analyze the spatial effects, in an attempt to provide references in promoting ecological environment restoration and ecological civilization construction in Yangtze river economic zone. Water resources welfare performance of Yangtze river economic zone shows a slowly rising trend from 2008 to 2017, high in eastern region, followed by western, low in central. Its performance center moves to the northeast. Also its welfare performance has a spatial concentrating and overflowing effects. Technical advance promotes water resources welfare performance, but environmental regulations and urbanization level play a negative role. Industrial structure and foreign investment level have little impact. This paper presents suggestions on coordinating regional developing mode, conducting technical innovation, establishing regional cooperation and exchange, expanding positive spatial overflowing and issuing localized policies.