Anal fissure is due to the anal skin and sphincter muscle tear, the formation of small ulcers, manifested as pain during bowel movement, blood in stool and constipation, physical examination can be found in the patient’s anus with anal fissure, anterior hemorrhoids and anal papilla hypertrophy performance. Anal fissure patients pain is characterized by sudden pain during defecation, short relief, prolonged intense anal pain after defecation; constipation and pain are causally related to each other, pain leads to the patient fear of pain fear of defecation, causing constipation; constipation when the stool is dry, difficult to defecate, after defecation even more pain, defecation anal sphincter muscle dilation, the expansion of the ulcerated surface of the tugging leads to bleeding. The anal sphincter breaks down to form an ulcerated surface called anal fissure, the lower end of the ulcerated surface due to inflammation and other stimuli, resulting in edema of the skin around the anal canal, thickening of the formation of anterior hemorrhoids and anal papillae hypertrophy, so clinically, most often see all three together, suggesting that the condition has been recurring for a long time, and need to be treated. Once there is bleeding in the stool, pain symptoms, you need to go to the hospital in time, a clear diagnosis, as soon as possible to give treatment, so as not to delay the condition, affecting the health of the body.