Small sun usually refers to small sun electric heater, there is no conclusive evidence that its radiation will have an impact on male sperm, but if especially close to the use of small sun electric heater irradiation perineum, there may be high temperatures and thus have a certain impact on male sperm. Small sun electric heater is mainly the use of resistance wire heating infrared heat radiation, and then use the radiation will be infrared directional reflection, so as to achieve the purpose of warming, there is no definitive authoritative information that in the case of normal use of this infrared heat radiation will have an impact on the male sperm. Of course, if the close use of small sun electric heater irradiation perineum, scrotum, the resulting high temperature may have an impact on the spermatozoa. Under normal circumstances, the temperature of the scrotum will be 2~3℃ lower than the human body temperature, such temperature is more suitable for sperm growth and development. Therefore, avoid direct exposure of small sun heaters to the scrotum. If there are symptoms of sperm abnormality, please consult a doctor in time.