The invention relates to the technical field of energy storage resource operation scheduling and transactions, in particular to a shared energy storage overall trading system based on block chain technology and an operation method. The scheduling node issues an energy storage discharge offer; the energy storage node responds to the charging offer and the discharging offer; the authentication nodereviews the responded energy storage node to form an effective intelligent contract; the monitoring node ensures correct execution of the contract; the settlement node settles the income of the new energy field station and the energy storage resource; and full-automatic and efficient operation of charging-discharging-fee settlement is realized through operation of the system. The method and systemhave the beneficial effects that based on the blockchain technology, effective bidding and automatic execution of the energy storage charging service and automatic and rapid response of the energy storage discharging service are realized through signing and automatic execution of charging and discharging contracts; fair settlement of the energy storage service cost is realized; the energy storageresources of the whole network can fairly participate in the transaction; and the safety of information transmission is ensured.