Red and itchy foreskin may be due to the reasons such as prepuce glans, long foreskin or allergy, etc., which need to go to the hospital in time for general treatment, medication, surgery and so on. 1. Foreskin glansitis: mainly due to bacteria, fungi and other pathogenic microorganisms in the inner plate of the foreskin or the surface of the glans to form inflammatory lesions, which can lead to the red itchy foreskin and other symptoms. In this case, you need to go to the hospital in time for examination, after clarifying the type of pathogen, apply levofloxacin and other drugs under the guidance of the doctor. Usually pay attention to rest, drink more water, eat less spicy and stimulating food. 2. Excessive foreskin: If the foreskin is too long and do not pay attention to hygiene, it can lead to increased dirt in the foreskin, easy to get infected, thus causing redness and itching of the foreskin. It is recommended to go to the hospital in time for examination, and circumcision can be performed after infection control. 3. Allergy: If you are allergic to clothes, toiletries or medicines, etc., the mucous membrane of the foreskin will be irritated and cause allergic reaction, and the redness and itchiness of the foreskin will also occur. Need to consult a doctor in time, clear allergens, under the guidance of the doctor oral antihistamine drugs such as loratadine. To summarize, if the foreskin red itch, need to actively consult the doctor, the above drugs need to be under the guidance of the physician reasonable application.