The invention discloses a stage lamplight heat dissipation device. The stage lamplight heat dissipation device comprises a lamp holder, the inner side of the lamp holder is fixedly connected with theedge side of a top seat through a plurality of supporting rods, a main lamp is arranged at the bottom of the top seat, a plurality of auxiliary lamps are arranged at the bottom of the lamp holder at intervals, an exhaust fan is arranged on one side of the top of the lamp holder, the two sides of the bottom of the lamp holder are both provided with ventilation grooves, the air outlets of the exhaust fan is in communication with the ventilation grooves, a plurality of shunting pipes are arranged at the bottom of the ventilation grooves, the air outlets of the shunting pipes are provided with airoutlet heads, a plurality of fixing blocks are fixedly arranged on the outer wall of the lamp holder, and the bottoms of the fixing blocks are fixedly connected with the non-telescopic ends of the telescopic rods. According to the stage lamplight heat dissipation device, heat generated during working of the stage lamp can be cooled through the spraying head with the adjustable position, so that the effect of heat dissipation is achieved, the exhaust fan and the shunting pipes are arranged, so that the cooling fins of the stage lamplight can be subjected to air supply and cooling, the heat dissipation effect of the cooling fins is accelerated, and the heat dissipation speed of the stage lamplight heat dissipation device is further improved.