Cost risk management of key chain in engineering construction project

In the process of construction project, it is always appearing that some budget overruns and abuse problems about costs happen, which mainly due to the overall planning and prediction of cost risk for project managers is not science or unreasonable. Based on the characteristics of the chain effect of cost risk, we establish the key chain of costs, then, take the cost risk quantity as the buffer of a key chain, in order to achieve the cost risk warning and help project managers master the cost risk from the overall situation, so that the project manager can make the scientific and reasonable cost risk measures.