Along with the progressive development of the human society,the human demand for the material support from nature is higher and higher.Meanwhile the disturbance to the nature resulted from humanity is increasing accordingly,and then the influence on the sustaining capacity of the natural world also increases,and so a tensile relation between humanity and nature appears.Therefore humanity should deal properly with the relations to the nature so that the human survival environment may not be imperiled.Water is the important element of the nature,and keeps an intimate relation with the existence of the humanity.Due to the successive increase of the amount of water uses and improper water utilization,water scarcity occurred in some places and regions.In work of mitigating the water induced hazards sometimes unsuitable measures can also aggravate the disasters.Therefore people should handle properly the relations with water conscientiously in the framework of dealing properly with the relations to the nature,so that sustainable utilization of water resources and sustainable development of the human society can be ensured.