The utility model relates to a wool top discharging automatic-stopping device for a gilling machine. The device comprises a gilling machine body (1), a material storage drum (2) is arranged at the rear end of the gilling machine body (1), a discharging roll (3) is arranged on a discharging port of the gilling machine body (1), and a wool top guide plate (4) is arranged below the discharging roll (3). The wool top discharging automatic-stopping device for the gilling machine is characterized in that a spring (5) is arranged below the wool top guide plate (4), and a photoelectric switch is arranged on one side of the wool top guide plate (4). When the wool top discharging automatic-stopping device works, a wool top presses down the wool top guide plate, the spring is tightly retracted, when the wool top is broken, the position of the wool top guide plate is reset by the spring, the photoelectric switch senses and transmits a signal to enable a motor to stop working, electricity is saved, production cost is reduced, and halt time is reduced.