Research conclusions：The following measures can be taken for control of railway construction cost: (1)The control of construction cost should be strengthened in design stage. (2)The active control of construction cost should be done, and the relation between technology and construction cost should be dealt with well through making economic and technical analyses and evaluations. (3)The life cycle cost of the project should be lowered, and the project investment scale should be controlled strictly to avoid unnecessary waste. (4) The legal person's responsibility system should be implemented. The legal person is responsible for the entire process from the project planning to funds collection, construction operation, paying the debt and value-keeping and value-increasing of assets. (5)The bidding system and supervision system should be implemented well, and the competition system should be introduced in the project management to choose highly qualified construction and supervision enterprises by establishing a set of relative systems. In addition, the contract management should be strengthened.