摘要:建筑CAD标准是实施建筑协同设计的基础和前提，而CAD图层标准是关键。本文对CAD图层标准进行了系统的研究，对国内几家大型建筑设计企业制定的企业标准，以及各专业软件内置的软件标准，进行了比较与分析，指出目前国内CAD图层标准存在的一些问题，并给出具体的解决方法。最后，对国内基于BIM的建筑协同设计进行了展望。

Abstract: Architectural CAD standard is the foundation and premise for the implementation of collaborative design. And the key point is the CAD layer standards. In this paper, a systematic study on the CAD layer standards was made. Through the comparison and analysis of CAD standards made by famous large domestic building design companies and those built in several popular design software, some problems existed in current domestic CAD layer standards were pointed out. Moreover the specific solutions were provided. Finally, the outlook on BIM-based building collaborative design was given.