At the age of 15, circumcision can be performed. Circumcision is not limited by age, and can be performed from infancy to old age. Circumcision is mainly for those who have obvious phimosis and repeated infections of the foreskin, and the head of the penis is still not fully exposed after puberty, and pathological phimosis, which is a condition where the foreskin is obviously too long, and the head of the penis can not be exposed under the state of erection of the penis. Therefore, children can be circumcised after the age of 15 when the above conditions occur. Contraindications to circumcision include buried penis, when the skin of the penis, especially the dorsal skin, is insufficient and is abnormally attached to the body of the penis, resulting in a short appearance of the penis, and part of the body of the penis is buried under the skin, which can not be revealed, accompanied by narrowing of the circumcision opening. Hypospadias, some mild hypospadias, the appearance of the foreskin development is normal, this is not recommended to perform circumcision. If patients have any discomfort, they need to consult the doctor in time for examination and early treatment.