Dynamically adjusting online bidding method

A dynamically adjusting online bidding method, applicable to an online bidding system established on a web server, for providing a plurality of bidders bidding on at least a bid item registered by an inquirer, comprising steps of:

• receiving inquiry information registered by said inquirer for at least a bid item;
• said inquiry information comprises specifications and quantity of said bid item, bid price setting and preset weightings for each bidder;
• storing said inquiry information in correspondent bid item databank;
• receiving bidding will information from bidders;
• each will information comprises a will to attend the bidding and an initial bid price;
• storing said will information in correspondent bid item databank;
• ranking all bidders by said initial bid prices and weightings of said bidders, and storing said rank in correspondent bid item databank;
• receiving at least a bid price reduction ratio registered by a bidder, and storing in correspondent bid item databank;
• and
• updating new rank of bidders according to all newest bid prices and weightings of bidders, and storing said updated rank in correspondent bid item databank.