Symptoms of diarrhea that persist in the elderly can be treated symptomatically through medication and preventive treatment. Infectious diseases of the digestive tract are a common cause of diarrhea, so the specific type of pathogenic bacteria can be identified through stool routine and blood tests. Then use targeted antibiotics for anti-infection treatment, common drugs are roxithromycin, benzathine penicillin, cefuroxime and so on. It can be combined with drugs with antidiarrheal and astringent effect, probiotics, such as enteritis pellets, stomach and intestinal pills, Bacillus subtilis dibacterium tablets. The above types of drugs can not only relieve and improve the symptoms of diarrhea, but also improve the gastrointestinal environment and enhance the immunity of the digestive tract. Patients should try to choose light and easy-to-digest foods in their daily diet, such as millet porridge, rice soup, noodles, etc., which have positive effects on accelerating recovery.