本文引入蒙特卡洛模拟分析理论,构建了架空线路工程造价合理区间分析模型,结合工程样本上数据建模分析,验证了模型的适用性与先进性,为提升架空线路工程造价合理性分析提供了一定的理论指导与方法借鉴。近年来,随着我国社会经济发展质量水平的不断提升,电力需求水平趋于稳定发展阶段,电力安全稳定供应及可靠性要求越来越高。大规模电网投资建设作为支撑电 In this paper, the Monte Carlo simulation analysis theory is introduced to construct a reasonable interval cost analysis model of overhead line engineering. Based on the data modeling of engineering samples, the applicability and advancement of the model are verified, which provides a reasonable analysis of the cost of overhead lines engineering Certain theoretical guidance and method reference. In recent years, with the continuous improvement of the quality of social and economic development in our country, the level of demand for electricity tends to be at a stable stage of development, and the demand for stable and secure power supply and the demand for reliability are getting higher and higher. Large-scale power grid investment and construction as a support electricity