Research conclusions ： ( 1) There are lots of uncertain factors that influence the target of the general contracting during the construction because of the features of the metro construction under the general contracting mode. The risk features of the general contracting, as the basis of the risk management, decide the risk management thinking and the way for dealing with the risk. (2) The IATM was built, the standards for the risk management were worked out and the risk management procedure was normed for providing a complete set of methods and procedures for the risk management to realize the looped risk management. (3) The risk monitoring and control systems were built to urge the corresponding departments to monitor and control the risks，adjust the risk countermeasures and the key emphasis in work according to the risk level, and focus on the prevention and control of the main risks for effectively controlling the risks. (4) The risk management is an important part of the project management. Strengthening the metro risk management under construction general contracting mode is very important to enhance the project management benefit and the management level of metro construction in China.