The white skin falling off the scrotum may be caused by physiological factors, fungal infection, scrotal eczema and other factors. 1. Physiological factors: too little water for a long time, the weather is relatively dry, may lead to scrotum dry cracks, peeling skin, there are no other clinical symptoms, is a normal physiological phenomenon. 2. Fungal infections: may be related to poor hygiene, when the scrotum localized fungal infections, may lead to localized scrotal peeling, may also be accompanied by itching, skin thickening and other symptoms. 3. Scrotal eczema: may be related to mental factors, environmental factors, infectious factors, can make the scrotum localized pimples, when there is chronic eczema, may make the scrotum localized white skin, may also be accompanied by itching, stinging and other symptoms. If the scrotum is white and there are other abnormal manifestations, it is recommended to consult a doctor for examination and treatment to avoid aggravation of the lesion.