Diarrhea in Chinese medicine is called “diarrhea”, diarrhea is not always kidney yang deficiency, common causes are dietary injuries, feel the external evil, chronic illnesses caused by the deficiency of spleen and kidney yang deficiency, and so on. Diarrhea refers to thin stools, increased frequency as a characteristic symptom, the disease is slow stools thin and unshaped people called “leakage”; the disease is urgent stools thin as water people called “diarrhea”. Diarrhea is not always caused by kidney yang deficiency, such as dietary injuries, emotional and emotional disorders, feeling the external evil, chronic illness and physical weakness to the spleen and kidney yang deficiency, congenital insufficiency, etc., may lead to the body of the wet stagnation of the internal growth of the spleen and stomach dysfunction, and cause diarrhea. Dietary injuries: diet is not regular or dietary impurity or overeating fat, sweet, thick and greasy, spicy food, causing gastrointestinal weakness caused by diarrhea. Emotional disorders: emotional depression causes weakening of the liver’s detoxification function, which affects the spleen and stomach and causes diarrhea. Feeling external evils: wind, cold, dampness, heat, epidemic and other evils invade the body, resulting in gastrointestinal dysfunction causing diarrhea. Post-illness deficiency: The depletion of the body’s positive qi after prolonged illness causes diarrhea due to the deficiency of the spleen and kidney yang. Inborn deficiency: Inborn deficiency, weak spleen and stomach, affecting the function of the spleen and stomach easily lead to diarrhea. Diarrhea should be timely consultation, in the physician diagnosis after treatment, do not self-medication, to avoid causing adverse consequences.