Getting up every morning with a stomachache and diarrhea may be caused by irritable bowel syndrome, intestinal flora imbalance, abdominal cold, indigestion, enteritis and other reasons. 1. Irritable bowel syndrome: daytime work is busy, stress, fast pace of life, easy to cause anxiety, depression induced irritable bowel syndrome, which can lead to intestinal peristalsis caused by the morning up every day diarrhea, but also cause intestinal smooth muscle contraction resulting in stomach pain. 2. Intestinal flora imbalance: eating an unbalanced diet or taking certain medications and other reasons, resulting in intestinal flora imbalance, harmful bacteria reproduction is more, can also lead to the emergence of intestinal peristalsis accelerated, causing diarrhea every morning, stomach pain. 3. Abdominal cold: sleep at night do not pay attention to abdominal warmth, especially often stay in the air-conditioned room to sleep easily caused by abdominal cold, resulting in intestinal peristalsis accelerated every morning caused by diarrhea, but also caused by intestinal smooth muscle contraction and lead to stomach pain. 4. Indigestion: often eat too much hard-to-digest food, overeating and lead to indigestion, not fully digested food into the intestinal tract, stimulate intestinal peristalsis caused by accelerated diarrhea, but also lead to stomach pain. 5. enteritis: the intestinal tract is infected by bacteria, viruses and other pathogenic bacteria, inflammatory media stimulate intestinal peristalsis to accelerate the cause of diarrhea every morning, stomach pain. When you get up in the morning with a stomach ache and diarrhea, it is recommended that you consult a doctor in time to identify the cause of the disease and treat it as soon as possible.