Different treatments should be chosen according to different causes of dark stools, and its common causes include physiological factors, drug factors, gastric ulcer, gastric cancer and so on. Treatment includes general treatment, drug treatment, surgery and so on. 1. Physiological factors: some foods such as animal blood or a large amount of iron-rich vegetables such as spinach will cause black stools, and there is no need for special treatment at this time. 2. Drug factors: long-term use of antiplatelet drugs such as aspirin or iron, etc., can cause black stools, this time to stop or change to other drugs can be. 3. Gastric ulcer: maintain a healthy lifestyle, such as quitting smoking and drinking, regular diet, etc., oral inhibition of gastric acid such as omeprazole, etc., to protect the gastric mucosa of the drug such as bismuth potassium citrate. 4. Gastric cancer: according to the degree of disease and personal situation, choose suitable surgery or other treatment. There may be other reasons for the black stool, if the black stool continues to be black, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and carry out standardized treatment under the guidance of the doctor, and the above medicines should be taken in accordance with the doctor’s instructions.