Intelligent contract execution node selection method and device based on block chain, and medium

The invention discloses an intelligent contract execution node selection method and device based on a block chain, and a medium. The method comprises the steps of acquiring a target transaction sent by a client and used for initiating intelligent contract calling, wherein an intelligent contract is pre-written and compiled according to business logic; collecting feature data of the executable nodes of the plurality of executable intelligent contracts, sorting the plurality of executable nodes according to the feature data, and feeding back a sorting result to the client; and obtaining an execution node selection result obtained by selecting the plurality of executable nodes by the client according to the sorting result, and uploading the selection result to the block chain. According to the method disclosed by the invention, a large number of executable nodes capable of executing the intelligent contracts can be sorted, the client is assisted to quickly and efficiently select high-quality execution nodes, the