Diarrhea is generally referred to as diarrhea, which is caused by acute gastroenteritis, inflammatory bowel disease, irritable bowel syndrome and other digestive disorders, as well as hyperthyroidism, lactose intolerance and other systemic disorders, and medication factors. Diarrhea like water can be seen in the intestinal secretion of fluid increases or absorption of water decreases, the intestinal lumen of the fluid will increase to a certain extent can be discharged with the feces, manifested as diarrhea like water. 1. Digestive system diseases: acute gastroenteritis is caused by a variety of infectious and non-infectious factors, which can manifest as diarrhea, abdominal pain, vomiting and other symptoms; inflammatory bowel disease is a kind of idiopathic intestinal inflammatory disease involving the digestive tract, which can manifest as diarrhea, abdominal pain, abdominal bloating, weight loss, etc.; Irritable Bowel Syndrome (IBS) can be characterized by abdominal pain, diarrhea, or constipation and other symptoms. 2. Other systemic diseases: hyperthyroidism due to elevated thyroid hormones in the body leading to high metabolic state, causing diarrhea symptoms; the body lacks the lactase enzyme to digest lactose, diarrhea, abdominal distension, abdominal pain and other symptoms can occur after eating dairy products. 3. drug factors: taking magnesium sulfate, senna and other laxatives can appear after the symptoms of diarrhea. When the symptoms are severe and persistent, it is recommended to go to the hospital and ask the doctor to make a judgment.