In today's Chinese society and economic development under the background of the "new normal", urban and rural development means great changes.At the same time, urban and rural planning technology is also facing further reform and innovation, and the traditional method of preparation of urban design will be faced with huge impact and the challenge of an information age.In this article, through understanding of geographical design concept and the existing three-dimensional GIS platform, it puts forward the formulation of thinking about the new methods for urban design in the future.