To provide a loan repayment management system and a loan repayment management method, capable of diversifying loan commodities while enhancing the selection freedom or satisfaction of a customer who applies for a loan.

At the time of loan application, prediction of rise/fall by each customer for the price of a financial product such as stocks or the value of Nikkei Index or the like is stored in a rise/fall selection information storage means 41, and the value of Nikkei Index or the lie at that time is stored as a reference value for determination in a reference value storage means 42. At the time of loan repayment, the loan interest of each customer is determined according to success/unsuccess of the prediction stored in the storage means 41 is correct or not based on to which side the value of Nikkei Index or the like is changed from the reference value. The loan lender preferably performs trade processing of an option according to the loan application by the customer.