The invention discloses a geometrical information extraction method based on BIM (Building Information Modeling). The way of the method is that numbering identification sorting, node space coordinatepositioning and the parameterized presentation of the geometrical information of a construction member are carried out. The method has the characteristics of being high in extraction efficiency, smallin parameterized presentation space occupation and flexible in application. The method has the beneficial effects that the problems that existing BIM can not realize information sharing with multi-source information including VR (Virtual Reality), a GIS (Geographic Information System), 3D (Three-Dimensional) printing, face recognition and the like, information interaction speed is low, information is lost, digital resources are terribly wasted, investment expenditure is overhigh and the like can be solved. The method can be widely applied to the full life circle of the planning, the design, the construction, the operation and the maintenance of civil construction.