There are two aspects of the situation of always having diarrhea: 1. The result of poor digestive function, mostly associated with their usual poor rest, stress, emotional strain, insomnia, and excessive worry, resulting in dysfunction of the plant nervous system, causing irritable bowel syndrome. This condition is mostly associated with dietary irregularities, such as eating stimulating foods instead of aggravating features. This is the most common clinical situation. 2, inflammatory infections or cold and flu caused by acute enteritis characteristics, this situation is accompanied by fever, abdominal pain, nausea, vomiting symptoms, this situation needs to give anti-inflammatory, rehydration symptomatic support treatment to prevent water-electrolyte disorders. If repeatedly not relieved, it is necessary to improve the routine stool and blood tests and colonoscopy to further clarify the diagnosis and assist in treatment.