Failure to form stools for several years may be due to physiological factors such as diet, or pathological factors such as dyspepsia and irritable bowel syndrome. 1. Physiological factors: some bad dietary habits, such as long-term eating cold, spicy and other stimulating foods, or greasy and other indigestible foods, or overeating, etc., easy to produce intestinal stimulation, resulting in gastrointestinal dysfunction, stools for a long time not shaped. 2. Irritable bowel syndrome: the patient’s intestinal tract is more sensitive compared to normal people, easily stimulated by the external environment, resulting in gastrointestinal function disorders, leading to stools not shaped for several years. 3. Indigestion: the digestion and absorption function of the gastrointestinal tract of the patient is impaired, resulting in food not being completely digested, causing stools to remain unformed for several years. In addition, chronic hepatitis, hyperthyroidism, diabetes mellitus and other diseases may also lead to the patient’s stool is not shaped for a long time. If the patient has the situation that the stool is not shaped for several years, it is recommended to consult a doctor in time and receive treatment actively, so as to avoid delaying the condition.