The present invention relates to a system and a method for providing a bidding service. The system for providing a bidding service according to an embodiment of the present invention comprises: a bidding condition determining part for determining a bidding quota and a bidding price based on the price of an object for a bid; a successful bidder selecting part for selecting a predetermined number of successful bidders among bidders; and a repayment transacting part for setting the relation of credits and debts between the successful bidders and failed bidders depending on successful bids, and transacting debt repayment by the successful bidders to the failed bidders.
