If it is caused by dietary factors, such as eating large amounts of animal liver or animal blood, such as chicken blood and duck blood, you can go vegetarian for three or three days and the stool will turn normal. Dark brown stool should also pay attention to the bleeding of the digestive tract, you can do a stool occult blood test to clarify the diagnosis, depending on the size of the bleeding can be treated with drugs or surgery. If it is caused by indigestion, you can take drugs to help digestion, such as stomachic and digestive tablets, mamma’s milk, etc., but need to be under the guidance of the doctor reasonable use. Usually, you should develop the habit of regular bowel movements to reduce the amount of hangover, eat more fresh vegetables and fruits, and get enough sleep.