Anal fissures in the bowels are mainly caused by constipation. When anal fissures occur, you can apply tylenol cream locally. In addition, after each bowel movement, wash the anus with warm water or pepper water to keep the anal area locally clean. Patients with anal fissures must pay attention to avoid constipation or diarrhea as much as possible. You should eat a light diet and eat more fresh vegetables and fruits, especially foods rich in fiber, such as celery, spinach and leeks. These foods can increase the amount of food residue, stimulate intestinal peristalsis, to avoid constipation. In addition, we should also pay attention to drink more water, especially a glass of honey water every morning on an empty stomach, can relieve constipation. You should also do proper exercise and activities, which can increase intestinal peristalsis and avoid dry stools.