The invention relates to an insulation star-shaped discharge valve. The insulation star-shaped discharge valve comprises an insulation shell, a rotor and a flange cover; the rotor includes a rotating shaft with a hollow internal, and multiple blades symmetrically distributed at the external of the rotating shaft; the cross sections of the blades are U-shaped; the bottoms of the blades and the rotating shaft are fixedly connected through connecting rods; a coupling connected with a driving motor is arranged at the external of the flange cover; the driving motor drives rotation of the rotating shaft through the coupling; multiple outer heating chips are arranged in the insulation shell; and a thermometer is arranged in a discharge port of an inner cavity chamber. The insulation star-shaped discharge valve optimally designs the structure of a traditional star-shaped discharge valve, uses an internal-external synchronous heating technology for preventing heat loss of high-temperature materials on the insulation star-shaped discharge valve, and is compact in structure, less in occupied space, convenient for use, fast in heating speed, short in heating time, low in heat loss, high in heating efficiency, excellent in continuity and excellent in implementation effect.