Based on the characteristic of architectural ichnography and criterion of architectural design fires prevention, the recognizing identification method and main program based on DXF format is proposed.

• 在研究了建筑工程图表示特点和建筑设计防火规范的基础上，给出了基于建筑工程矢量图形文件（DXF文件）的几何特征识别方法，并给出了识别部分的主要程序。