This paper discusses in depth the current situation of quality and safety of power supply guarantee work under extreme weather,and the relevant standards based on it.Through the detailed analysis of the three phases of pre-disaster prevention,emergency response and post-disaster recovery,this paper comprehensively explains the key role of standardization in early warning and monitoring,equipment inspection,material reserves,on-site investigation and emergency power supply.At the same time,through a specific case study,this paper suggests that the relevant standards need to be revised.