The invention provides a real two-way auction method with quantity discounts in an electronic logistics market, and relates to the technical field of logistics and supply chains. The method comprisesthe following steps: firstly, establishing a social welfare maximization model for a logistics service purchasing market, and proposing a TR-QD real two-way auction mechanism; wherein the auction mechanism can ensure incentive compatibility, individual rationality, budget balance and asymptotic efficiency. And meanwhile, the TR-QD auction mechanism considers the bidding time, so that the order canbe issued earlier and met earlier. Compared with traditional real two-way auction, the TR-QD mechanism supports bidding of logistics companies to carry out quantity discount and customer cooperativepurchase, and more customers can enjoy discount of large-scale logistics service. The TR-QD auction mechanism of the invention can realize the increase of the total income of customers, the total income of logistics companies and the total income of society. The problem that an original auction mechanism cannot deal with the situation that logistics companies have quantity discount bids and customers cooperate to purchase is solved.