<p>In order to protect the privacy of bidders and prevent malicious bidders from launching collusive attacks with the auctioneer, this paper proposes a quantum sealed-bid auction protocol based on secure multi-party sorting. The protocol utilizes quantum Fourier transform, which enables the bidders to ensure the security and anonymity of the bidding information by phase encoding the privacy data during the bidding process. After the auctioneer has obtained the results of the ranking of all the bid prices, only the highest bid is published, and bidders only know whether they have won the bid, and have no access to information about the others. The winning bidder must disclose the random number selected during the commitment phase for verification. The protocol eliminates the need for additional quantum entangled states, simplifying the resource requirements. Security analyses demonstrate that the protocol can effectively resist multiple attacks in the absence of a trusted third party, fulfills the requirements of fairness, anonymity and public verifiability, and exhibits high efficiency and broad application prospects.</p>