To solve key peoblems in urban bored tunnel, this article uses simulation technology to introduce the construction method of 3D model of geological, tunnel and mechanical equipments. Simulation technology is applied throughout the processes of the construction organization, construction training, and on-site implementation. The practice shows that simulation techniques can find the problems in advance during the construction, reduce the risk of construction, and optimize construction scheme. It is a best way of construction organization and provides the scientific and reasonable decision basis for the project managers. Finally, this paper can serve as reference for similar construction projects.