Abstract: In the background of rapid development of renewable energy and low-carbon transformation of energy structure, power systems are changing from deterministic systems to strong stochastic systems. Various methods and means dealing with uncertainty have emerged in various fields such as power system analysis, planning and operation. This paper summarizes the existing achievements, expounds the research difficulties and discusses the future research areas in the field of uncertainty factors modeling,uncertainty factors impact assessment, decision-making in uncertainty environment and uncertainty mitigation measures. It is pointed out that interdisciplinary integration is the development trend of uncertainty analysis methods, and achieving energy balance in a broad range is an important means to deal with uncertainty factors.