Circumcision mainly consists of secretions from the foreskin glands and shed epithelium, which is a kind of accumulation in the foreskin cavity between the glans and the inner plate of the foreskin. It may be caused by the patient’s long-term failure to clean the penis, or it may be caused by diseases such as prolonged foreskin and glansitis. 1. Long-term failure to wash the penis: If the patient has not washed the penis or glans for a long time, it may lead to a long-term accumulation of secretions in the foreskin, which will lead to the phenomenon of foreskin scale. 2. Hypospadias: Hypospadias is mainly caused by congenital penile adhesion or narrowing of the external opening of the foreskin, patients will have difficulty in urination, foreskin scaling and other symptoms, patients with hypospadias will also have edema of the foreskin, the head of the penis is dark purple and other symptoms. 3. glansitis: glansitis has a variety of causes, mainly due to bacterial, fungal and other pathogenic infections. The main symptoms of patients are local itching, pain, erythema and so on, which will lead to the symptoms of foreskin scaling. When patients appear foreskin scale, they should go to the hospital in time, and take treatment measures under the guidance of the doctor. Usually should pay attention to personal hygiene, keep local clean.