Edge computing service interaction method and system based on blockchain

The invention discloses an edge computing service interaction method and system based on blockchain. The method comprises the steps: taking a certain device with an operating system environment of a user as a bearing entity of a multi-access edge computing as a service MECaaS; registering computing power equipment of a user as an edge node ECN through MECaaS, and uploading or updating registration information of the edge node to a blockchain layer according to a unified format, wherein the request device serves as a data generator to issue a calculation task to the MECaaS; enabling the MECaaS to call the smart contract deployed by the blockchain layer and standardizing the data format of the calculation task; matching the target edge node for the request device through a distributed decision algorithm, and establishing M2M communication between the request device and the target edge node, so the request device can transmit original data to the target edge node, and the target edge node returns the calculation