The progress of construction projects in the plan are generally based on engineering theory and construction developed on the basis of experience. In addition, The schedule impact on the political and economic situation, resources, technology development and other factors. So progress has a great uncertainty. Once the delay period to the owner and construction unit will be a great deal of risk, so risk control of the progress it is essential. This article describes the uncertainty factors about affect on schedule and progress against these uncertainties should be how to control and progress of risk response.