Soy sauce can be caused by dark-colored food, ulcerative colitis, intestinal flora disorders and so on. 1. Consumption of dark-colored food: such as consumption of red dragon fruit, pig’s blood and other foods can lead to soy sauce-colored stool, which is a normal phenomenon generally do not need special treatment, reduce the consumption of such food can be relieved on their own. 2. Ulcerative colitis: If the patient suffers from ulcerative colitis may be due to the colonic mucosa attached to the surface of the colon, resulting in mucus, pus and blood in the stool, so there will be the phenomenon of soy sauce color, the patient can be used under the guidance of the doctor, mesalazine, sulfasalazine and other treatments. 3. Intestinal flora disorders: When the patient’s intestinal flora disorders, the growth of harmful bacteria accelerates, affecting the normal function of the intestinal tract and accompanied by the emergence of inflammation, which can lead to soy sauce-colored stool, can be used under the guidance of the doctor Lactobacillus, Lactobacillus acidophilus and other treatments. Other conditions may also lead to the color of the stool, it is recommended that the patient consult a doctor in a timely manner to identify the cause of the disease and then under the guidance of the doctor to carry out the appropriate treatment.