Stomachache and diarrhea are common in acute enteritis, which can be caused by infection or unclean diet. Clinically, there will be increased stool frequency, loose stool or watery stool, abdominal pain and other symptoms. Blood routine test, stool routine test and other tests can be performed to determine the cause. Diarrhea is often accompanied by indigestion, so the diet should be light, which is conducive to protecting gastrointestinal function. If it is caused by infection, it can be treated with oral antibiotics, such as berberine, levofloxacin, etc. If the symptoms of diarrhea are serious and dehydrated, you can take rehydration solution, take salt solution orally or drink more water. You can eat rice soup, millet porridge, egg soup and other easily digestible foods. For chronic enteritis, you should avoid catching cold. You can take Shenling Baizhu Powder or Bupi Yichang Pill for conditioning.