Getting up in the morning with diarrhea indicates a problem with intestinal function, which may be caused by many reasons, such as cold at night when sleeping, improper eating, and morning diarrhea caused by intestinal diseases, which should be combined with accompanying symptoms as well as auxiliary examinations to determine the specific cause and then take appropriate treatment. 1.Cold at night: If you do not sleep well at night, resulting in a cold abdomen, it is easy to cause a decrease in intestinal function and diarrhea symptoms in the morning; 2.Inappropriate food: If you eat too much indigestible, greasy and spicy food the day before or the night before, resulting in irritation of the intestinal mucosa and disruption of gastrointestinal function, diarrhea symptoms will easily appear in the morning; 3.Intestinal diseases: Irritable bowel syndrome, enteritis, intestinal polyps, etc. Patients need to pay attention to whether there are other symptoms, such as abdominal pain, mucus, pus and blood in the stool, etc. Patients should pay attention to a light diet, avoid eating too much greasy, spicy and hard food, drink some warm water appropriately, and pay attention to keeping warm when sleeping at night. If the symptoms of morning diarrhea persist and cannot be relieved, it is recommended to go to the hospital gastroenterology department to improve blood routine, stool routine or even colonoscopy to clarify the cause of the disease and then carry out treatment. If it is caused by enteritis, oral antibiotics can be administered accordingly. If it is caused by intestinal polyps, tumors, etc., surgical treatment may be required.