The writer of this paper exploits various reasons of the seepage on construction's outer wall surface, proposes seven technique methods from executing practicing and teaching aspects, which are available in main construction and decorate stage. 笔者分析了建筑工程外墙面渗漏形成的多种原因,从施工实习教学的角度提出了主体工程施工阶段、装饰工程施工阶段等七项行之有效的技术措施。