Edema after sex after circumcision may be caused by premature sex, or poor local circulation, infection and other reasons. 1. Premature sexual life: circumcision itself will cause local skin and mucous membrane irritation, causing edema and other symptoms, if premature sexual life, it will be easy to induce the occurrence or aggravation of edema. 2. Poor circulation: circumcision may cause damage to local blood vessels, resulting in poor local blood circulation, sexual stimulation will aggravate the local circulatory disorders, venous return obstruction, so it will cause post-circumcision edema after sex. 3. Infection: If there is a secondary bacterial infection after circumcision, the inflammatory stimulus will also cause local congestion and swelling, resulting in post-circumcision edema after sex. There may be other reasons for post-circumcision edema, you need to go to the hospital in time to check, follow the doctor’s instructions for treatment, pay attention to rest after circumcision, avoid premature sex.