工程成本控制主要是放在内部管理上，特别是直接工程费和工期的有效控制，其次外部的市场因素和施工阶段的变更索赔也是着重考虑的一个方面。结合近几年所经历过的工程盈亏情况谈谈如何降低建设项目施工阶段的工程成本。

The top emphasis of the project cost control should be placed on internal management, especially on theeffective control of the direct cost and construction period. Furthermore, external factors of the construction market, changes of works and claims should also be considered in the project cost control. In this article, the author, based on his experience, makes discussions on theproject cost control during construction period.