The possible causes of itchy foreskin are as follows: 1. Suffering from prepuce or prepuce, there is more foreskin scale inside, or not paying attention to local personal hygiene, urine remains on the foreskin for a long time after urination, which can lead to local itchiness. The physical examination reveals more local dirt and foreskin scale attached within the inner plate of the foreskin, which requires local cleaning treatment. 2. Circumcision, local itching can occur, and the cause of infection can be bacterial, or fungal, trichomonas, etc. Most of the local infection is caused by contact with pollutants, or through unclean sexual contact, and can also be caused by the long-term presence of foreskin scale stimulation. The appearance of local redness, accompanied by white secretions, accompanied by local ulcers and other changes. 3. local allergic reactions, such as contact with allergens, resulting in local itching, and can be accompanied by rashes, accompanied by local secretions, can be accompanied by itching of the skin in other parts of the body.