The reason for the pain in the glans of the boy is possible: 1. Acute glansitis, mostly due to the lack of personal hygiene or the presence of prepuce or circumcision, resulting in the local presence of foreskin scale, resulting in chronic irritation, in addition to pain can also be manifested as local redness and swelling or accompanied by increased local secretions, etc., need to be confirmed after physical examination, to give anti-infection treatment. 2. Circumcision, generally seen in the circumcision of the patient. The probability of circumcision and glansitis can be reduced, and it is also easy to maintain local hygiene and cleanliness.