Transaction risk identification method, device and system

The invention discloses a transaction risk identification method and device, equipment and a storage medium. The method comprises the steps that: a transaction network diagram is obtained; community division is performed on the transaction network diagram to obtain the total nodenumber of each community; nodes of which the in-degree and out-degree are larger than corresponding preset threshold values are selected so as to form a target node set, the preset threshold values are related to the total node number of the community where the nodes are located; and in the target node set, according to a preset identification index, the node with the transaction risk is identified, wherein the preset identification index is used for representing the transaction risk of the node. By adopting the transaction risk identification method, device and system provided by the technical schemes of the embodiment of the invention, the problem that an anti-illegal fund transfer rule is easy to learn and contains subjective facto