在现有的建筑结构设计与分析中，通常采用确定性的方法，由均值参数代替实际结构参数进行分析，虽然考虑了荷载和抗力的随机性，但也仅限于构件截面的可靠性分析。本文利用计算机随机模拟技术和Ｍｏｎｔｅ－Ｃａｒｌｏ法，对设计对称ＲＣ框架结构体系进行了随机分析，并得出了几点有用的结论。 In the existing design and analysis of building structures, deterministic methods are usually used to analyze the average parameters instead of the actual structural parameters. Although the randomness of load and resistance is considered, it is also limited to the reliability analysis of the component sections. In this paper, stochastic analysis of the design of symmetrical RC frame structure system is made using computer stochastic simulation technique and Monte-Carlo method, and several useful conclusions are drawn.