There is a clear clinical definition of circumcision. Usually, the glans is not fully exposed when the penis is fully erect, and the glans is still fully or partially wrapped by the foreskin, which is a circumcision. Overcircumcision is likely to cause the accumulation of a large amount of foreskin scale in the foreskin cavity, resulting in glansitis, glans sensitivity and a higher incidence of penile cancer. Therefore, people with long foreskin must pay attention to personal hygiene, often turn up the foreskin to expose the glans and coronal groove, and should pay attention to regular cleaning and timely removal of foreskin scale to prevent the occurrence of foreskin glansitis. If you have recurring glans penis or other inflammatory lesions, you should consider circumcision in time.