Diarrhea should be treated according to the cause of the patient’s illness, and not only look at the side effects of drugs. If it is triggered by intestinal smooth muscle spasm, intestinal motility inhibitors such as loperamide can be used; if it is triggered by intestinal micro-ecological imbalance, micro-ecological agents such as bifidobacteria triple live bacterial preparation can be used; if it is triggered by bacterial infections, antibacterial drugs such as levofloxacin can be used. If it is triggered by intestinal smooth muscle spasm, intestinal power inhibitors such as loperamide can be used, which acts directly on the smooth muscle of the intestinal wall and exerts an antidiarrheal effect by inhibiting intestinal peristalsis. Adverse reactions include gastrointestinal flatulence, nausea and dizziness, abdominal pain and constipation, headache and so on. Note that bacterial diarrhea, acute ulcerative colitis patients are prohibited. If it is triggered by intestinal microecological imbalance, microecological preparations such as Bifidobacterium bifidum triplex capsule, Bacillus licheniformis capsule, Lactobacillus acidophilus compound tablets can be used. They can directly supplement the normal physiological bacteria of human body and adjust the balance of intestinal flora. Adverse reactions and contraindications are not clear, but it should be noted that this product is a live bacterial preparation and should be taken with cold or lukewarm water. If it is triggered by bacterial infection, quinolone antibacterial drugs such as levofloxacin and norfloxacin are preferred. The use of the drug can lead to myalgia, Achilles tendonitis, Achilles tendon rupture, cartilage damage, prolongation of the Q-T interval, dysglycemia and other adverse reactions. Note that patients with cerebral arteriosclerosis, epilepsy, hepatic and renal insufficiency are prohibited. Patients should go to the hospital in time for treatment after diagnosis by a professional physician and strictly follow the doctor’s instructions.