A method and an apparatus for mining a social relationship based on financial data is presented. The method for mining a social relationship based on financial data in the present disclosure includes: acquiring financial transaction data of a client user; determining a financial transaction network according to the financial transaction data; determining a network topology attribute of the client user and a non-network topology attribute of the client user according to the financial transaction network; and determining, according to a topology attribute of the financial transaction network and the non-network topology attribute, a social relationship corresponding to the client user.