The causes of oily stool are mainly the following: First, it may be due to malnutrition caused by continuous overeating and irregular diet in recent days, resulting in a situation with oil in the stool. Second, if the patient appears to poop with oil, more serious, but also with abdominal pain symptoms, this can be considered due to acute gastroenteritis caused by this condition due to food in the human intestinal tract stay briefly, has not been absorbed out, greasy food is excluded, so that the human organism is difficult to digest, resulting in acute gastroenteritis condition. The third, may be due to the human body gastrointestinal dysfunction, this time also easy to appear stool oil situation, it is recommended to take, bifidobacteria tablets to treat this symptom can be, the symptoms of serious people can go to the hospital, to do a detailed examination, to identify the cause. These are the main reasons for oily stools.