Tummy diarrhea may be caused by acute enteritis, bacterial dysentery, intestinal flora imbalance and so on. 1. Acute enteritis: refers to acute infection of the intestinal tract, which occurs mostly in summer and fall. The main manifestations are abdominal pain, diarrhea, fever, loss of appetite, nausea, vomiting and other symptoms. It can lead to stomach diarrhea. 2. Bacterial dysentery: refers to a kind of intestinal infectious disease caused by Shigella, mainly manifested as inflammation and ulceration of rectum and sigmoid colon. Symptoms include fever, malaise, nausea, vomiting, abdominal pain, diarrhea, loose stools, mucopurulent hemorrhagic disease and so on. Its can also lead to stomach diarrhea. 3. Intestinal dysbiosis: It refers to a series of clinical symptoms caused by the inhibition or destruction of beneficial bacteria in the intestinal tract and the reproduction of harmful bacteria, thus causing dysbiosis. The main manifestations are diarrhea or constipation, intermittent abdominal pain, bloating, nausea, vomiting and other symptoms. This leads to diarrhea and watery stomach. There are many other causes of diarrhea and watery stomach, you should consult the doctor in time to identify the cause of the disease and follow the doctor’s instructions for further treatment or therapy.