2) Accurately identify risks and explore the relationship with risk factors. There is no duplication or overlap in accurately distinguishing risks. In addition, every effort should be made to control the relationship between risks, such as primary and secondary schools, causality, etc. In the first stage of risk determination, it is difficult to determine the relationship between risk factors.3) Equal emphasis on exclusion and recognition. Risks that require an early conclusion can be ruled out or identified as quickly as possible. For those who cannot identify or exclude risks, we need to analyze as soon as possible and then exclude or confirm. Finally, a positive risk cannot be ruled out or identified as a risk.(4) If necessary, it can be verified by test. General methods are difficult to verify and cannot determine their impact on construction projects, especially when verification experiments are required to determine technical issues, such as experimental wind tunnels. . . . The results of risk analysis are more reliable, but the cost