A vending machine is equipped with a dispensing device that includes a plate, a track, carriers, a work station, a driving unit and a sensor. The plate is horizontally placed in a vending machine. The track is connected to the plate. The carriers are movably connected to the track for carrying products. The work station causes a selected one of the carriers to release the corresponding one of the products. The driving unit drives the carriers along the track. The sensor senses the selected one of the carriers and accordingly stops the driving unit so that the selected one of the carriers is placed at the work station.