Global climate change has been extensively concerned by scientists, policy-makers and the public, and become an important area of investigation in the social and natural sciences and engineering.Global climate change may have major impacts on aquatic ecosystems. The major impacts on water resources are the supply of water resources and the demand of water resources. The vulnerability assessment of water resources is comprehensive analysis of water resources ecosystem, including the supply and demand of water resources. Water resources in our country are deeply affected by climatic change, for example, the disequilibrium of distribution, the floods as well as the droughts. In addition,since the concerns with the global climate change were given, water resources vulnerability in respond to
climatic change in our country has been or is being studied scarcely. Based on the reasons above, the assessment method of vulnerability of water resources under global climate change is probed in this paper,which aims at providing the scientific theoretic basis and foundation for the decision-making of policy-makers and the improvement of theory of vulnerability in our country.