Abstract: Keeping abreast of the spatiotemporal distribution characteristics of nutrients such as nitrogen and phosphorus in a watershed is the key to ensuring the water environment and aquatic ecological safety of Poyang Lake.Based on the water quality monitoring data of 14 state-controlled/provincial monitoring sites of the main stream and major tributaries of the Fuhe River in the past 9 years, the temporal and spatial distribution characteristics of ammonia nitrogen and total phosphorus concentrations in the Fuhe River Basin were studied.The single-factor evaluation, Nemero composite pollution index and cluster analysis were applied to evaluate the pollution of ammonia nitrogen and total phosphorus content in the main stream and major tributaries of the Fuhe River.Results showed that:(1) Ammonia nitrogen concentrations at 91.29% of the sites and total phosphorus concentrations at 86.19% of the sites were better than Class Ⅱ limit ofEnvironmental Quality Standards for Surface Water.(2) The interannual variations of ammonia nitrogen and total phosphorus concentrations in the Fuhe River were relatively small.However, there were significant monthly and seasonal variations in ammonia nitrogen and total phosphorus concentrations.The maximum values of ammonia nitrogen and total phosphorus concentrations were observed in summer.(3) The concentrations of ammonia nitrogen and total phosphorus in the upstream were generally lower than those in the middle and lower reaches of the Fuhe River.(4) The ammonia nitrogen and total phosphorus in the main stream of the Fuhe River were mildly polluted, and the ammonia nitrogen and total phosphorus in the tributaries of Linshui River and Dongxiang River were severely polluted.The research results have important reference value for the water environment protection and management in the Fuhe River Basin.