The wave of “digital age” featuring digital information is coming. Digital technology is profoundly changing the societal development direction and evolution paths. It also has significant bearing on production modes, social interactions and lifestyles. With regard to urban design, a system of knowledge about the creation and adaptation of material space forms that integrate humanities, art, technology and materials, digital technology has provided it with a brand-new and revolutionary scientific impetus for its evolution. The result of this evolution is “digital urban design paradigm based on human-computer interaction”, i.e., the urban development is moving toward “pan-dimensionality” and “individual ubiquity”. The future of urban design will construct a new approach to urban research and engineering, which is more complex, capable of accommodating and compatible with multiple goals of “instrumental rationality” and “value rationality”. Such a new approach shall be led by the probabilistic theory of “gray scale thinking”, reflecting quaternary synergetic view of “scientific rationality, ecological rationality, cultural rationality and technical rationality” to realize the cognitive progress of “engineering for the benefit of mankind”.

具有数字信息的“数字时代”的浪潮即将到来。数字技术正在深刻改变社会发展方向和发展路径。它还对生产方式，社交互动和生活方式有重要影响。关于城市设计，这是一个将人类，艺术，技术和材料融为一体的物质空间形式的创造和适应的知识体系，数字技术为其发展提供了崭新的，革命性的科学动力。这种演变的结果是“基于人机交互的数字化城市设计范式”，即城市发展正朝着“泛维度”和“个人普遍性”迈进。未来的城市设计将为城市研究和工程构建一种新的方法，这种方法更加复杂，能够容纳并兼容“工具理性”和“价值理性”的多个目标。这种新方法应以“灰度思维”的概率理论为指导，反映“科学合理性，生态合理性，文化合理性和技术合理性”的四元协同观点，以实现“为人类造福工程”的认知进步。 。