According to embodiments of the present invention, a method for relaying a secured loan uses a borrower terminal, a broker terminal, an investor terminal, a loan relay platform server, and a loan execution server connected via the internet to relay a secured loan, and comprises : a secured loan request process where the borrower terminal requests a secured loan from the loan relay platform server; a real estate transaction fact checking process where the loan relay platform server checks a real estate transaction fact for real estate requested for the secured loan; an investment execution process where the loan relay platform server pays an investment from an investor to the loan execution server when the real estate transaction fact is checked and an electronic contract is concluded; a secured loan execution process where the loan execution server uses the investment to execute a secured loan for a borrower having secured collateral; a principal and interest repaying process where the loan execution server repays the principal and interest of the secured loan to the loan relay platform server if the principal and interest are repaid; and an investment repaying process where the loan relay platform server receiving the principal and interest uses the principal and interest to repay the investment and an investment profit to an account of the investor.(100) Broker terminal(200) Loan relay platform server(300) Investor terminal(400) Borrower terminal(500) Loan execution server(600) Wired/wireless communication networkCOPYRIGHT KIPO 2018