This paper defines the urban wetland and human settlements in cities, and explains the meaning of the sustainable development of urban human settlements. Through the influence mechanism, approaches, and involved fields, this paper points out that the urban wetland will affect residential system, artificial supporting system, ecologic environmental system, socioeconomic system and spirit-culture system of human settlements. Based on the difference of the urban wetland types, distributing status, allocation and service functions, the authors expands the diversity of the urban wetlands and the af...