Abstract: From 1997-1999, a dynamic monitoring of fishery resources and environment was carried out in Poyang Lake. A total of 2778 kg fish were captured with various fishing gears. The biological characters of 1627 fishes were measured. Fishes of 12 orders, 21 families and 122 species were collected,of which the fishes of Cyprinidae were 65 species and accounted for 53.3%. Most of the fish were very small and only 1-2 ages, and the carp, goldfish and silver carp were this year fish. The 33 spawning sites of the carp and goldfish in Poyang Lake distributed in the east, sourth and west of the lake, and the yearly area was 616.66km2, the yearly spawning amount was 5685 million of eggs. Every index (pH, COD, Cr6+, Cd, Zn, Cu, Pb, TN, TP, NH4-N, Hg) of the water in Hukou, Hamoshi, Xingzhi, and Kangshan accorded with the standards, which showed the quality of the water in the lake is fine.