Diarrhea is usually caused by cold, infection, etc. It can be treated by infusion, oral medication and dietary adjustment. 1. Infusion therapy: when diarrhea is severe, there may be symptoms of dehydration such as limb weakness and dizziness, so you can choose infusion therapy, such as glucose water, to prevent dehydration and electrolyte disorders. 2. Oral medication: anti-inflammatory drugs such as levofloxacin capsules can be used, and at the same time, you can take some anti-diarrhea medications, such as xanthin tablets, montelukast, etc., and at the same time, the use of Saccharomyces boulardii to help stop diarrhea and regulate intestinal flora imbalance. 3. Adjust the diet: avoid too spicy, greasy, cold and other stimulating food, eat more easily digestible food. It is recommended that if there is no improvement for a long time, you should go to the hospital for examination to find out the cause of diarrhea, and actively carry out targeted treatment, pay attention to rest, and enhance your immune system.