The invention discloses a method and device for identifying a transaction request, and relates to the technical field of computers. One specific embodiment of the method comprises the following stepsof receiving and analyzing a transaction request to obtain the associated information between a first user and a second user; according to the association information between the first user and the second user, adding the transaction request to a sub-mesh graph corresponding to the first user, wherein in the sub-mesh graph, the nodes represent the users, and the weight of the connection line between the nodes represents the number of transactions between the users; and based on the sub-mesh graph corresponding to the first user, identifying the feature information of the first user so as to identify the transaction request. According to the embodiment, the technical problems of low identification efficiency and incapability of ensuring the accuracy can be solved.