The energy storage is perplexed by low utilization efficiency and poor profit due to its high cost in energy storage and lack of trading platform.Here,a non-cooperative game trading model based on blockchain is designed for shared energy storage.Taking microgrids as nodes,shared energy storage uses digital signature to verify node identity,which can effectively guarantee the transaction security.The trading mechanism for shared energy storage is established on the self-driven and self-executing smart contract.The non-cooperative game model can maximize the benefits of each node,improve energy storage profit,and motivate the node users to participate in transactions,thus help optimize the industrial structure.Example analysis shows that the blockchain-based non-cooperative game trading model can effectively realize participation of energy storage in market transactions,improve energy storage utilization efficiency,increase energy storage profit,and provide technical and theoretical support for further development of energy storage industry.