Several current 4D CAD systems are firstly compared and discussed in this paper,and the building information model(BIM) is introduced and compared with the 4D CAD technique. Then basic functions and applying situation of 4D CAD are revealed.

• 通过对比分析了常见的4D CAD软件,探讨BIM概念与4D CAD技术之间的关系,揭示4D CAD技术的基本功能和应用现状。