The efficiency of life cycle management of assets in power grid enterprises affects the development of enterprises. At present, there are some major problems in asset life cycle management, such as non-standard management, non-unified management process and weak modularization management. As a decentralized data storage technology, block chain technology has the advantages of tamper-proof information security, open sharing and reduced management cost. Therefore, block chain technology is applied to asset life cycle management, a traceable, verifiable and extensible management system is discussed, and an operation architecture based on block chain is built to improve the standardization of asset management. The imtamability of block chain technology is utilized to realize the digital authentication of asset flow; In addition, the distributed characteristics of block chain technology are utilized to realize efficient verification of assets and equipment, and finally, the ability to record equipment life-cycle events and improve the efficiency of life-cycle management of power grid assets are improved.