With the advances in construction techniques, safety management of construction site is facing huge challenges. The safety of the construction site is essential for civilized construction and the interests of construction workers. This paper analyzes the security problems of the construction site, and based on BIM technology, an appropriate plan is proposed. With the advantages of BIM technology in security monitoring processes, construction site layout and other complex construction, security communication, hazard early prevention, safety management processes improvement, real-time on-site dynamic control and rational arrangement are realized.