The embodiment of the invention provides a social relationship mining method and a social relationship mining device based on financial data. The social relationship mining method based on financial data comprises the steps of: acquiring financial transaction data of a client user, and determining a financial transaction network according to the financial transaction data; determining network topological attributes and non-network topological attributes of the client user according to the financial transaction network; and determining a social relationship corresponding to the client user according to topological attributes and non-network topological attributes of the financial transaction network. According to the social relationship mining method and the social relationship mining device, the problems in the prior art that the judging efficiency of social relationship among the client users is low and the social relationship of the client users is not discovered comprehensively enough are solved.