本文结合《数字立体声电影院的技术规范（试行）》和工程实践， 探讨了数字立体声电影院改建中的建筑优化设计方法，包括电影院空间利用、观众 厅顶棚处理、多孔吸声材料选择与布置、背景噪声控制等。文章指出优化设计是获 得良好视听环境又节省改造资金的根本途径。文中还对背景噪声的测量方法提出 了改进意见。 Based on the technical specifications of Digital Stereo Cinema (Trial Implementation) and engineering practices, this paper discusses the architectural optimization methods for the reconstruction of digital stereo cinema, including cinema space utilization, auditorium ceiling treatment, selection and arrangement of porous sound absorbing materials, background noise Control and so on. The article points out that optimal design is the fundamental way to get good audio-visual environment and save capital. The paper also put forward some suggestions on how to measure the background noise.