Farting and spraying blood, consider with hemorrhoids, anal fissure and other diseases, need to go to the hospital for further examination to clarify the cause of the disease, and then timely consultation. 1. Hemorrhoids: generally due to varicose veins in the anus, anal cushion downward displacement caused by anal swelling, bleeding and other symptoms. When farting, the anus will be contracted and compressed, which will lead to farting and spraying blood. 2. Anal fissure: mostly related to dry stools, anal fissure will usually appear pain, bleeding and other symptoms. The patient will fart and spray blood. 3. Rectal polyps: Rectal polyps are caused by genetic factors, chronic inflammatory stimulation, gene mutation, etc. The main symptoms of patients are blood or bleeding in stool, change in bowel habits, and abdominal pain. As a result, patients will have farting and blood spraying. 4. Rectal cancer: Most of the early rectal cancers are asymptomatic; when rectal cancer grows to a certain degree, there are changes in bowel habit, bloody stool, pus-blood stool, urgency, constipation, diarrhea, etc.; the stool gradually becomes thin, and there are obstruction of defecation, emaciation or even malignant disease in the late stage. Farting with blood may occur. If the phenomenon of farting and spraying blood occurs, it is recommended to go to the hospital for consultation in time.