By defining the concept of underground engineering hazards, this paper analysed hazards features, made recognition of the key hazards in the construction technology of cutting and covering method construction, shield tunneling method construction and shallow relatioe construction, gained the focus on the main points of all the safety construction, and provided guidance to underground engineering safety construction.%通过界定地下工程危险源概念，分析了危险源特征，对明挖法施工、盾构法施工和浅埋暗挖施工工艺中的关键危险源进行了辨识，得到各安全施工中需要重点关注的要点，从而为地下工程安全施工提供指导。
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