Stomach pain and constant watery diarrhea are most commonly associated with acute bacterial enteritis, or acute bacterial dysentery. If you want to further clarify the diagnosis, you need further stool routine tests to clarify the diagnosis. The current treatment is active anti-inflammatory symptomatic treatment, you can intravenous infusion of levofloxacin or cephalosporin anti-inflammatory drugs, you can also take oral flavopiridol and haloperidol, these drugs intestinal anti-inflammatory effect are very good. If you are pregnant, infants or elderly people, you can also take probiotics orally, which are effective in killing pathogenic bacteria with probiotics and do not have any side effects. But the stomach pain must be clearly identified with the specific location of the abdominal pain in order to identify it with other diseases. For example, cholecystitis and gallbladder stones can also lead to abdominal pain, and when combined with indigestion, it can also lead to diarrhea and watery diarrhea. Therefore, once you have stomach pain and watery diarrhea, you must go to the hospital to be examined by a doctor to clarify the exact location of the abdominal pain. It is better to have a routine stool test and blood test to improve the diagnosis basis and clarify the treatment plan without delay.