Black unshaped stool may be related to upper gastrointestinal bleeding, taking animal blood products and iron-containing drugs. If the bleeding is from the gastrointestinal tract, active treatment is required, and if the symptoms are caused by taking food or drugs, it is recommended to stop taking them. Common causes and treatment 1, upper gastrointestinal bleeding: the appearance of upper gastrointestinal bleeding, due to the role of iron in hemoglobin and intestinal sulfide, the formation of black ferrous sulfide, accompanied by weakness, dizziness, pallor and other symptoms, you need to promptly go to the hospital for gastroscopy, once diagnosed as gastrointestinal bleeding, you can choose endoscopic treatment or interventional therapy, etc.; 2, eating animal blood products and iron-containing drugs: if Take bismuth and iron drugs, it will cause the stool to appear black. In addition, if a large amount of animal blood products such as pig’s blood is consumed, it can also lead to black stools. If it is caused by the above two causes, there is no need to worry too much, stop taking bismuth, iron, animal blood products, the symptoms can disappear; 3, intestinal inflammation: when the intestinal tract infection phenomenon, there can be a change in the color of the stool as well as the nature of the black unshaped stool, which is often accompanied by other symptoms, such as fever, loss of appetite, etc.. It is recommended to seek medical attention in a timely manner, to carry out anti-infection treatment against the pathogen. The health care should pay attention to the diet, eat more easily digestible food, fresh vegetables, fruits, etc., to help the body to replenish vitamins, avoid eating some stimulating, hard food, such as chili peppers, nuts, etc., avoid drinking a lot of alcohol, smoking, to develop a good lifestyle habits, medication need to follow medical advice, if there is discomfort, promptly seek medical advice.