In this paper,the application potential of blockchain technology in crane safety supervision is discussed,especially its advantages in processing data in the whole equipment life cycle.Due to the high security and traceability of blockchain technology,it can effectively solve the problems of multi-node participation,long-term use and data consistency of lifting machinery.This paper puts forward the construction of quality and safety traceability system of crane by using blockchain and its practical application in social co-governance,aiming at changing the traditional supervision mode and realizing a more efficient and coordinated"block-chain co-governance"mode.This new supervision framework aims to overcome the shortcomings of traditional supervision in coordinating multiple parties,information transparency and real-time data processing,and provide a more comprehensive and accurate safety monitoring method for lifting machinery.