The present invention relates to an impeller for stirring materials of a coffee machine and a mixer using the same so that powder material, which is a raw material of a beverage (tea), can be easily and smoothly diluted in water. The impeller according to the present invention is coupled to the shaft of the mixer in which the material powder and water is mixed; Agitation blades protruding from one side outer peripheral surface of the coupling portion; And it has a lower height than the stirring blade, characterized in that it comprises a secondary stir wing protruding in the longitudinal direction of the coupling portion. In addition, the mixer according to the present invention and the frame is installed inside the vending machine coupled to the drive motor; A base member coupled to the frame so that a support portion protrudes from a center portion of the driving motor to expose the shaft of the driving motor, and an installation portion is provided outside the support portion; Water and material powder of the vending machine is inserted into the base member so that the shaft is located inside, and the water and material powder of the vending machine are introduced therein, and an outer side is provided with a coupling protrusion coupled to the mounting portion and the inner surface is supported by the support portion. case; And an impeller fixed to the shaft and rotating so that the water and the material powder are mixed. ; Coffee, vending machine, powder, stirring
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