本文通过对珠江过江隧道预制砼沉管施工的总结，提出了适于预制砼沉管的砼裂缝的防止方法和技术措施，同时对自行设计的钢模台车的工作原理和施工方法作了简单的介绍，珠江过江隧道预制砼沉管已取得圆满成功，本文所提出的施工技术和方法是行之有效的． Based on the summary of the construction of prefabricated concrete immersed pipes in the Pearl River cross-river tunnels, this paper puts forward the methods and technical measures to prevent the concrete cracks in the prefabricated concrete immersed pipes. At the same time, the working principle and construction method of the steel- Brief introduction, prefabricated concrete immersed pipe in Pearl River cross-river tunnel has been a success, the construction techniques and methods proposed in this paper is effective.