The possible causes of pain in the glans of boys are: 1. Acute glansitis: Mostly due to the usual lack of personal hygiene or the presence of prepuce or circumcision, resulting in the local presence of foreskin scale, resulting in chronic stimulation, in addition to pain can also be manifested as local redness or swelling or accompanied by increased local secretions, etc., need to confirm the diagnosis after physical examination and give anti-infection treatment; 2. The patient, because the foreskin is narrow, the accumulation of more urine or foreskin scale, coupled with the usual lack of attention to personal hygiene or use of hand to play with the genitals can cause glans pain, can be accompanied by the foreskin obvious redness, swelling, pain and other symptoms, need to carry out the relevant examination to give anti-infection treatment. The circumcision is recommended after the infection has completely healed and the pain has reduced or disappeared, which can reduce the probability of circumcision and glansitis and also make it easy to maintain local hygiene and cleanliness.