The present invention relates to a product transaction management computer, a product transaction system, and a product transaction method. The present invention provides a product transaction management computer, a product transaction system including the product transaction management computer, and a product transaction method using the product transaction management computer. In the system including the product transaction management computer for operating and managing an online shopping mall, the product transaction management computer is characterized by comprising: a means for acquiring approval for a product transaction using a dedicated account of a product purchaser from at least one non-related person not related to the product purchaser when the product purchaser requests settlement of the product purchase using the dedicated account; and a means for the product purchaser to complete the settlement according to the approval for the product transaction from the non-related person.
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