BT mode (Build - Transfer) is a kind of financing mode, refers to government departments use non-financial fund for basic facilities construction project. In recent years, more and more project in Domestic construction market use BT mode, and BT mode also use in Construction of urban infrastructure projects. So BT mode has a broad application prospect of urban rail transit projects in the future. Based on the analysis of the common operation forms of BT mode, this paper analyzes the common risks in BT mode in operation, and discusses the principle of risk-sharing w...