If there is an anal fissure, topical ointments can be applied directly to the anal opening or directly to the fissure of the fissure, because the anal opening is a relatively small place, and applying to the anal opening can also work to the fissure area, so it is more convenient to apply directly to the anal opening. If there is an anal fissure, commonly used ointments are nitroglycerin ointment and hemorrhoid ointment. If the pain after the fissure is particularly intense and lasts for a long time, you can apply nitroglycerin ointment topically to relieve the spasm of the anal sphincter and relieve the pain quickly, and the effect is still relatively good. But if there are patients with heart disease, it is best not to use nitroglycerin ointment. In addition, hemorrhoid cream can promote the healing of anal fissure fissures to a certain extent, the pain relief effect is not as good as nitroglycerin ointment.