Sudden bowel movement with red oil may be related to diet, or may be caused by pancreatitis, gastrointestinal bleeding, functional dyspepsia disease, etc. Further examination is needed to confirm the diagnosis. 1. Diet: such as eating too greasy food, eating chili peppers and other stimulating food, such as spicy hot pot, pig’s blood, etc., may cause the symptoms of red oil in the stool. 2. Pancreatitis: often accompanied by abdominal pain, greasy stools, blood in the stool and other symptoms, can check the blood amylase, pancreatic ultrasound and so on to confirm the diagnosis. 3. Gastrointestinal bleeding: such as gastric ulcer, erosive gastritis, hemorrhoids, etc., can be further examined by stool routine, enteroscopy, gastroscopy, etc. to confirm the diagnosis. 4. Functional dyspepsia: abdominal distension, diarrhea and other symptoms, due to food indigestion, there can be symptoms of red oil in the stool, you can go to the hospital gastroenterology department to rule out organic lesions. The symptoms of red oil in the stool, you can go to the hospital gastroenterology, after diagnosis, targeted treatment, so as not to delay the condition.