There are many reasons for the appearance of stomach pain and diarrhea like water, mainly including improper diet, functional gastrointestinal disease, gastroenteritis, irritable bowel syndrome, you need to consult the gastroenterology department, clear the cause to take the appropriate drug treatment. 1, improper diet: overeating, eating cold, spicy food will stimulate the gastrointestinal tract, the symptoms of stomach pain and diarrhea like water. Need to adjust the diet in a timely manner, avoid eating spicy, greasy, cold food, in order to prevent dehydration, you can choose drug treatment under the guidance of a doctor, such as montelukast, loperamide hydrochloride tablets, etc.; 2, functional gastrointestinal disease: due to the stomach to food tolerance diastolic function decline or mental psychological, genetic and other factors, there will be no pain in the stomach diarrhea like water symptoms. For this situation, it is recommended to eat less stimulating, cold food, eat less and more meals, avoid smoking and alcohol, can choose easy to digest gruel, if not relieved, can be applied under the guidance of the doctor to help digestion of drugs, such as compound digestive enzyme capsules, domperidone tablets, etc.; 3, gastroenteritis: appear not accompanied by stomach pain diarrhea like water symptoms can also be seen in the viral infection caused by gastroenteritis. The acute phase of gastroenteritis should reduce irritating and cold food, drink more warm water, prevent electrolyte disorders; oral medication, such as Bacillus licheniformis capsules, compound Huangliansu, etc.; 4, irritable bowel syndrome: generally due to gastrointestinal intolerance to food sensitivity, easily caused by diarrhea like water, there will be bloating and other symptoms, the symptoms of stomach pain is relatively rare, can be applied under the guidance of a doctor to help anti-diarrhea The symptoms of stomach pain are relatively rare, and can be applied under the guidance of a doctor to help stop diarrhea, such as Alverine citrate soft capsules, trimethoprim tablets, etc.