Black stools may be caused by dietary and medication factors, as well as peptic ulcer, acute gastritis and other disease factors. Dietary factors do not need to take medication, drug factors caused by no complication of gastric bleeding does not require special treatment, disease factors caused by the need for targeted treatment under the guidance of the doctor, drug therapy, including omeprazole, aluminum thioglycollate and so on. 1. Dietary factors: eating animal blood or some iron-rich vegetables can cause black stools, which is a normal phenomenon and does not require medication. 2. Drug factors: taking iron, bismuth and other drugs can also cause black stools, this kind of drug-induced no special treatment; if you are taking aspirin and other non-steroidal anti-inflammatory drugs caused by black stools with gastric bleeding, you can consider stopping the drug. 3. Disease factors: peptic ulcer, acute gastritis and other diseases can cause upper gastrointestinal bleeding leading to black stools. Peptic ulcer can be treated with omeprazole, lansoprazole and other medications as prescribed by the doctor, and endoscopic hemostasis treatment can be performed if necessary; acute gastritis caused by the need to use aluminum thioglycollate, omeprazole and other medications as prescribed by the doctor, as well as removing the cause of the disease, such as avoiding alcohol and taking non-steroidal anti-inflammatory drugs, and so on. Black stools are recommended to go to the hospital if necessary.