Abstract: The middle of Nongjiang River is the ecological corridor connecting the two wetlands of Honghe National Nature Reserve and Sanjiang National Nature Reserve.The types and features of marsh wetlands in the corridor area are representative of the original landscapes of the Sanjiang Plian.By the field survey,the characteristic of bird diversity in Nongjiang River wetland ecological corridor and its surrounding was studied in the spring,2008.11 monitoring plots were chosen according to different bird habitats' types.68 species of spring birds,belonging to 14 families and 26 orders were recorded in the corridor.The results showed that the bird diversity was abundant in the corridor in spring and the index of Shannon-Winner was 1.466 9.Bird diversity index of the habitat of mire was the maximum(1.260 1),next was the habitat of water body(1.248 8),residential area(0.903 1),farmland(0.872 8),the habitat of forest was the minimum(0.871 6);the evenness index of water habitat(0.182 3)was the maxim um,next was then the farmland(0.164 6),forest(0.142 9)and mire(0.110 5),the index of residential area was the minimum(0).The area of mire and water body should be maintained to preserve the ecological function of Nongjiang River wetland corridor.