Diarrhea caused by bacterial infections oral cephalosporin is useful; if the intestinal flora dysbiosis, irritable bowel syndrome, diarrhea caused by abdominal cold, take cephalosporin has no effect. 1. Bacterial infection: If the diarrhea is caused by intestinal bacterial infection, cephalosporin can play a role because it has the effect of inhibiting bacteria. 2. Intestinal dysbiosis: diarrhea caused by intestinal dysbiosis, cephalosporin has no effect, but may aggravate the diarrhea. 3. Irritable bowel syndrome: irritable bowel syndrome can cause diarrhea when the patient is nervous, anxiety, at this time to take cephalosporin also has no effect, it is recommended to regulate the mood, release the pressure, and at the same time with montelukast and other anti-diarrheal treatment. 4. Abdominal cold: abdominal cold can lead to intestinal peristalsis accelerated, causing diarrhea, at this time to take cephalosporin is not useful, can be given to hot compresses on the abdomen and other treatments to alleviate the symptoms of diarrhea. Diarrhea is recommended to go to the hospital in a timely manner, under the guidance of a professional physician to identify the cause of the disease, and follow the doctor’s instructions for treatment, do not take medication without authorization.