Human settlement environment is the basis of people existence and development, and currently Chinese urban construction is being faced with many problems on human settlement environment. Through contrasting the concepts of the American Edged Urbanism with the New Urbanism in the later half of the 20th century theoretically, this paper indicated the change in concept of urban design from the technological rationality to the nature and humanity. It expounds that the essence of New Urbanism is the idea of human settlement environment, and enlightens that people should promote urban construction and human settlement environment by way of humanism, and maintain harmonious development of human, nature and human settlement environment, thus the urban environment should walk up a correct way, and the idea has academic and extensive practical value for new development zones.