Foreskin ectropion is usually caused by the following reasons: 1. Patients who have prepuce can lead to foreskin ectropion in the state of penile erection, when the too-tight foreskin is embedded in the glans coronalis area, which can cause local swelling or pain, and if it is longer it can cause local edema to increase, which needs to be repositioned for treatment. 2. Consider for patients who have had operations such as catheterization or cystoscopy, and after examination the The foreskin was turned over to the glans coronalis, but it did not return to its original position in time, which can lead to local edema. 3. Consider that when the patient was cleaning the external genitalia, the foreskin was turned out to the glans and coronalis, and excessive violent stimulation during the cleaning can lead to local edema, so that the foreskin cannot return to its original position. The above is an analysis of the specific reasons for the patient’s foreskin flip, a long time foreskin flip may cause the glans ischemia and local necrosis performance, so patients should pay attention to, timely medical treatment for disposal.