Dark red bloody stools may be the result of colitis, gastrointestinal bleeding, and colon polyps. It can be treated with medication and surgery according to the cause. 1. Colitis: refers to inflammatory lesions of the colon caused by a variety of reasons, patients usually have diarrhea, abdominal pain, mucus, pus and blood stools and other symptoms. It is usually treated with medication, commonly used medication such as mesalazine, olsalazine, and salazosulfapyridine. 2. Gastrointestinal bleeding: it refers to the bleeding in the digestive tract from the esophagus to the anus, and the manifestations are mostly blood in vomiting, black feces or bloody stools. It can be treated with medication, commonly used acid-suppressing drugs such as omeprazole, ranitidine, etc. Surgery such as laparoscopic arterial ligation, caesarean section, etc. can also be taken. 3. Colorectal polyps: are all the superfluous organisms protruding into the intestinal lumen, which can lead to symptoms such as blood in the stool and mucous bloody stools, and the main treatment is endoscopic removal. If there is dark red blood stool, it is recommended to seek early medical treatment, standardized treatment to reduce the adverse effects of the disease.