The definition and development of stage fireworks were introduced. The radiation characteristics of flame temperature and sparks temperature of stage fireworks during being displayed were discussed. The thermocouple tree testing apparatus consisting of 59 thermocouples was established to measure the flame temperatures of stage fireworks. The flame temperature distribution of typical stage fireworks was investigated by temperature measure system with thermocouple and infrared thermograph. The results show that the flame temperature of typical stage fireworks is extremely high,and the temperature nearby the exits of the fireworks during being displayed are up to 1200-1450 ℃. There is a long and narrow high temperature region along the emitting direction of the stage fireworks. The size of high temperature region of stage fireworks is positively relative to its basic display performances,such as emitting heights,emitting velocity,radiuses and durations. However,the size of high temperature region of stage fireworks is essentially depend on the compositions,dosage and combustion condition.