本文论述了城市地下岩土工程的重要性及特点、难点,由于它与复杂多变的自然条件密切联系,所以在施工中需要解决一系列技术上的问题,涉及到多门学科,因而往往成为工程建设的难点,保证工程质量、提高工程经济效益和社会效益的关键步骤。 This article discusses the importance and characteristics of urban underground geotechnical engineering, as well as its difficulties. Due to its close relationship with the complex and ever-changing natural conditions, it is necessary to solve a series of technical problems in construction, involving many disciplines and thus often becoming Difficulties in construction, to ensure project quality, improve the project economic and social benefits of the key steps.