The common causes of the swelling of the glans are phimosis, narrowing of the opening of the foreskin, phimosis and glansitis. 1. Penile circumcision patients in the external turning of the foreskin to wash the foreskin scale, glans when the action is rough, exertion, and cleaning after the foreskin is not reset will lead to the glans is swollen, the symptoms of the foreskin ectropion. 2. The narrow opening of the foreskin can also cause the foreskin to be embedded in the vicinity of the coronary groove, which can lead to edema, pain and other symptoms of the glans. 3. The foreskin glans is often due to phimosis, phimosis, pathogenic bacterial infection caused by the patient will often appear glans skin mucosa and the foreskin at the edema, itching and urinary frequency urgency urinary pain and other symptoms. When the patient has a swollen glans, the patient should immediately go to the hospital.