Suddenly appeared diarrhea, this situation should be considered to be cold and flu or eat unclean food, not good digestion of food results. Generally, it is caused by poor digestive function, this situation needs to pay attention to the following points: 1, pay more attention to rest, appropriate activities. 2, pay attention to drinking water, replenish the water-electrolyte balance, to prevent electrolyte disorders. 3, to give medicinal treatment, clinically commonly used are montelukast 3g 1 time, 2-3 times a day; loperamide hydrochloride 2 capsules 1 time, 1 or 2 times a day; patchouli Zheng Qi Oral liquid 10ml 1 time, 2-3 times a day. If accompanied by abdominal pain or nausea, vomiting and fever, need to give norfloxacin capsules 1 time 2 capsules, 2 times a day oral. If the effect of oral medication is not relieved, it is necessary to give intravenous fluids, as well as to give supplemental fluids, electrolyte balance therapy. If necessary, we need to improve the routine stool examination and blood routine examination to further clarify whether there is viral and bacterial infection caused by this situation, and treat the symptoms according to the examination results.