8-year-old boy anal fissure first can choose conservative treatment, if the condition is more serious long-term can not be cured may also need surgical treatment, it is recommended to go to the hospital in time for examination, and then according to the doctor’s advice to develop the appropriate treatment program for treatment. 1. Conservative treatment: Generally, if the fissure of anal fissure is relatively small, you can apply antibiotic ointment, such as erythromycin ointment or gentamycin ointment. At the same time, you can also take potassium permanganate sitz bath for treatment, adhere to the daily rinse with warm water, pay attention to diet regulation. All of the above medications should be used under the guidance of a doctor to avoid self-medication. 2. Surgery: If the anal fissure is large, long-term can not be healed, the condition is more serious, then need to carry out surgical treatment, can be recovered. Usually should pay attention to dietary regulation, not too much to eat puffed food, especially in the diet should pay attention to avoid eating spicy and stimulating food, avoid alcohol. You can drink more water, consume more vegetables and fruits, keep the bowels smooth, avoid dry stools. In life, we should pay attention to avoid squatting and sitting for a long time, and avoid getting cold.