The white skin on the foreskin may be caused by poor hygiene, or it may be caused by diseases such as glansitis and contact dermatitis. 1. Poor hygiene: the phenomenon of white foreskin may be caused by the patient’s failure to wash the penis in time in daily life, which leads to the accumulation of urine and other substances in the foreskin, resulting in the appearance of white foreskin scales, so the patient will have the manifestation of white foreskin. 2. Glans: Glans is caused by infectious or non-infectious factors, and the main symptoms of patients are ulceration, erosion and ulceration of the foreskin. Glans can also lead to the phenomenon of white foreskin scale, so the patient will have the symptom of white foreskin. 3. contact dermatitis: contact dermatitis is due to skin contact with exogenous substances triggered by allergies, patients will appear lesions, flaking and other symptoms, so the patient’s foreskin contact dermatitis will have the performance of the foreskin white skin. When the patient has the symptom of white skin on the foreskin, it may be caused by not paying attention to hygiene, and does not need treatment. If it is a disease caused by the foreskin white skin, the patient should promptly consult a doctor, follow the doctor’s instructions for treatment.