The paper analyzes factors influencing project cost management,applies ISM model,establishes structural models influencing various factors,and explores ratio of influential factors in cost control,which has provided some basis for compiling effective project cost control measures.%分析了影响项目成本管理的因素，应用解释结构模型（ ISM模型），建立了各影响因素之间的结构模型，探讨了各影响因素在成本控制中所占的比重，为制定有效的项目成本控制措施提供了依据。
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