After the infusion of anti-inflammatory drugs diarrhea to be divided into two cases: First, before the use of drugs have abdominal pain, diarrhea, no relief or aggravation of symptoms after the use of drugs, consider the condition of acute gastroenteritis is not under control, may be the bacteria causing the infection is not sensitive to the antibiotics used. Second, the intestinal side effects of antibiotics, most antibiotics are broad-spectrum antibiotics, in addition to the infected bacteria have a killing effect on the normal intestinal bacteria, causing intestinal flora imbalance, manifested as diarrhea. The first case requires replacement of sensitive antibiotics, such as levofloxacin lactate, cephalosporin III effective antibiotics for intestinal infections. In the second case, it is recommended to stop antibiotics if the original infection is under control, and continue to use antibiotics if it is not under control.