Risk management should be run through whole project management process,and the risk factors should be constantly analyzed,judged and monitored,also issued a strategy.That is to say,project should be implemented for dynamic risk management.On the basis of life cycle theory,combining with the risk characteristics of large hydraulic project,the risk identification of work breakdown structure(WBS recently) and risk breakdown structure(RBS) was discussed,and which was used to identify the risk factors by the ris...