Abstract: The important foundation of digital metro station constructiong is to build a visualized and measurable model. The traditional metro station measurement method has many disadvantages, such as heavy workload, low automation, low measurement efficiency, poor information acquisition and incomplete results. In this paper, 3D laser scanning technology is used to quickly obtain the spatial information of metro stations. This method has the advantages of non-contact measurement, high efficiency, high precision, high degree of automation, comprehensive and rich information, diverse forms of results, strong scalability, etc. It can provide authoritative, accurate and intuitive mapping data for daily operation and management of subway. At the same time, it can minimize the impact on the daily operation and management of the station,assisting in the digital transformation of Shanghai metro.

Key words: metro station survey, 3D realistic technology, high efficiency