Urumqi Petrochemical Company Cultural and Sports Center is the place for the staff and their family member and the masses around to organize recreational and sports activities. This project is a complex sports building. Its roof is steel grid structure, which is 50m from east to west and 60m from north to south. The frame is supported by 22 reinforced concrete columns. This article analyzes the structure selection, stress characteristics and the key problems in structure design of the roof structure. The key problems and measures for roof structure are summarized, which can provide reference for similar projects.%乌石化文体中心为乌石化公司职工、家属及周边群众锻炼身体，组织文体活动的主要场所，该工程为一复杂体育建筑，其上部屋盖为钢网架结构，网架东西跨度50m，南北跨度60m，网架支承于22根钢筋混凝土柱上。本文围绕屋盖结构选型、受力特点及结构设计中的关键性问题，进行了分析研究，归纳、总结了钢网架屋盖结构设计中应注意的关键问题及应采取的结构措施，可供同类工程参考。
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