以工程项目施工阶段成本控制要素为研究对象,通过文献研究初步识别出30个成本控制的基本要素并进行问卷调查;然后运用相对重要性指数分析要素之间的相对关系,并对排名靠后的要素进行分析;最后,运用主成分分析法探索要素的内部关系,提取7个主成分因子进行解释和命名,分别是:动态监控、计划水平、控制尺度、沟通协作、资源控制、控制手段和成本分析。 Taking the cost control elements in construction phase as the research object, 30 basic elements of cost control were initially identified and investigated through literature review. Secondly, the relative importance index was used to analyze the relative relationship between the elements, Finally, we use principal component analysis (PCA) to explore the internal relations of the factors and extract 7 principal component factors to explain and name them: dynamic monitoring, planning level, control scale, communication and collaboration, resource control, control measures and costs analysis.