Abstract: Daqing wetland is one of the most important natural resources. We have investigated Daqing Longfeng and Zhalong wetland nature reserve Dangnai section from March 2007 to December 2008 to master the biology resources and realize the sustainable use. The result shows that there are four hundred and sixty-nine kinds of plants and three hundred sixteen kinds of vertebreats in Daqing wetland. Resources of invertebrates are quite abundance which have high biodiversity value. Now the wetland and its ecosystem biodiversities are threatened by climate and artificial factors. The article discusses the biodiversities in Daqing wetland and considers that we must take firm strategy to protect Daqing wetland and maintain its ecosystem biodiversities. At the meantime the author put forward reasonable suggestions to protect Daqing wetland.