From October 2002 to December 2008,219 times of surveys were conducted on the bird structure of Yuanmingyuan Relic Park,Beijing. Totally 217 bird species of 15 orders,47 families were recorded. Among them,119 species belong to migrants,57 species belong to summer bird,42 species belong to resident,20 species belong to winter birds,1 species belongs to vagrant and 3 species were escaped bird. There were 26 bird species in Yuanmingyuan are listed as second class of China National Protected Wildlife. The little grebe (Tachybaptus ruficollis),mallard (Anas platyrhynchos) and Eurasian blackbird (Turdus merula) were recorded as residents in Beijing and the Chinese Spot-billed duck (A. poecilorhyncha zonorhyncha),common teal (A. crecca),Orange-flanked bush robin (Tarsiger cyanurus) and Pallas’s leaf warbler (Phylloscopus proregulus) were recorded as winter birds. Eurasian sparrowhawk (Accipiter nisus) was not only migrant bird but also recorded as wintering and summering in Beijing. The wetland complexity and hydrophyte plant diversity affect the bird structure in Yuanmingyuan Park. In the recent years,the clear up of weeds and shrubs caused the decrease of buntings (Emberizidae) and Vinous-throted parrotbills (Paradoxornis webbianus).