Automatic bag lead-out garbage bin

The invention discloses an automatic bag lead-out garbage bin. A fixing groove is assembled at the bottom of an outer barrel of a garbage bin; garbage bags are placed in the fixing groove; the bottom of an inner barrel of the garbage bin is provided with a notch of which a position corresponds to the part of the outer barrel for placing the garbage bags; and when one garbage bag is drawn out, a new garbage bag is brought into the inner barrel from the outer barrel through the notch. In order to prevent the situation that the outflow of liquid in a broken garbage bag is likely to impregnate the new garbage bags, a lifting device is arranged below the notch to keep the notch slightly higher than the inner barrel. When the placement of the new bags (in coil) is required, the inner barrel of the garbage bin can be taken out and a new garbage bag coil is placed in the fixing groove. The garbage bin has the advantages of simple structure and convenient manufacture. When in use, the new bag can be conveniently place