When the penis is turned up, the glans is swollen, and the possible clinical causes are the embedded edema of the foreskin and glans phimosis. 1. Foreskin incarcerated edema: clinically, this situation exists in men, which is usually accompanied by the prepuce, when forcibly turned down the foreskin due to the caliber of the smaller, glans area is covered, the glans area of the blood circulation is affected by the formation of edema state. 2. Foreskin and glans inflammation: This condition refers to the inflammation of the glans and foreskin caused by infection, trauma and irritation, which is mostly seen in young men with a long foreskin or a prepuce, with clinical manifestations of localized redness and swelling of the foreskin and glans, vesiculation, ulceration, and so on. If the condition persists or is accompanied by obvious pain, it is recommended to go to the hospital as soon as possible for targeted treatment to avoid damage to the penis.