Abstract: A driving method of an automatic vending machine, the method comprising the steps of moving a cup holder member to an initial position, discriminating whether the cup holder member has been positioned in the initial position, stopping a product sales when the cup holder is not positioned in the initial position at the initial position discrimination step, converting the automatic vending machine to a stand-by state when the cup holder member is positioned in the initial position at the initial position discrimination step, and extracting raw materials and hot/cold water separately into the cup and selling the product, such that a cup supplied from a cup loading bin can be accurately accommodated in a cup holder member at a cup dispenser, thereby preventing an improper sale of product due to inaccurate positioning of the cup in the cup holder member or discontinuation of product due to the cup hitched at the cup dispenser, and improper sales of product can be prevented due to the cup holder member of the cup d