Anal fissures are all due to dry stools that damage the skin of the anal canal and form chronic ulcers after repeated episodes, resulting in anal fissures that do not heal. In this case, first of all, you should eat a light diet, keep your bowels smooth, treat with herbal sitz bath after stool, and you can properly apply topical Ma Yinglong musk hemorrhoid cream to relieve pain as well as stop bleeding. If the fissure is less than 1 month old, it is called a fresh fissure and can be treated with medicine and diet to promote the healing of the fissure in about 5 days. If the fissure is older than 1 month, it is called an old fissure and may require surgery if medication is not effective. The surgery is anal fissure incision, fissure removal or anal dilation therapy, which requires hospitalization, so you can consult your local hospital specialist for details.