Balanitis can be caused by bacterial infection, fungi, trichomonas and other infections. Treatment methods: 1. Bacterial balanitis. It is recommended to use potassium permanganate solution for external cleaning, and the shell should be coated with antibiotic ointment, such as Baiduobang ointment or erythromycin ointment. Those with severe symptoms can also take antibiotics orally, such as taking 1 capsule of cefixime twice a day, Take orally for one week continuously. After waiting for the infection to be cured, circumcision is recommended. 2. Fungal balanitis, also known as mycotic balanitis, it is recommended to use sodium bicarbonate solution for external cleaning. After cleaning, the part should be wiped dry and kept dry. Miconazole ointment can be applied externally, 2-3 times per day, for one week. 3. The balanitis caused by trichomonad infection can also be manifested as redness, swelling and erythema of the balanitis, which is usually transmitted through sexual contact. It is recommended to use metronidazole for washing, and keep dry after washing. Take 2 metronidazole tablets orally 3 times a day for one week.