The best age for circumcision is after the age of 4. According to experts, for circumcision, after the age of 4, the mild adhesion between the foreskin and the penis gradually disappears and the foreskin can be turned up for boys. It does not matter if the circumcision is not done at the age of 4, it is better until puberty. Before puberty, all parts of the body are not fully developed, so it is okay, but after puberty is the beginning of sexual development. So it is not recommended to do circumcision after puberty. If the circumcision is more serious, it may cause difficulty in urination, or even urine retention. When long-term foreskin dirt collects, it can cause itching. If your child is circumcised, it is recommended to seek timely medical attention.