PROBLEM TO BE SOLVED : To provide an inventory real estate processing support system for forming a database by gathering inventory real estates owned by a real estate supplier (such as a trader), allowing a user to widely retrieve the database, and reducing an offer price more than a sale price.SOLUTION : This inventory real estate processing support system is provided with a property database 5a for storing property data on the inventory real estates, and an introduction control server 4 for indicating a property read out of the property database 5a on a site, and is characterized in that the user can buy and rent the real estates under a condition recorded on the database 5 by issuing a letter of introduction to the user from the introduction control server 4 when selecting a desired property from the property data indicated on the side.