The common causes include organic diseases such as intestinal cancer, intestinal tuberculosis and inflammatory bowel disease, as well as functional pathologies such as intestinal dysbiosis and intestinal dysfunction. If the stool is not formed for a long period of time, patients are advised to consult the gastroenterology department. If the cause is intestinal cancer, surgery is the main treatment, together with chemotherapy and radiotherapy. In case of intestinal tuberculosis, the patient may have mucopurulent stools, etc. Anti-tuberculosis treatment should be given early, in sufficient quantity and duration, and glucocorticoid treatment should be given if necessary. If the disease is caused by enteritis, the treatment is based on anti-inflammatory and immunosuppressive drugs. In case of functional enteropathy, all tests are normal, and patients are advised to pay attention to diet, rest and symptomatic treatment. In addition, after a long period of irregular stools, patients should try to eat regularly, eat less and more often, avoid cold, greasy and spicy food to stimulate the intestinal tract, and relax and relieve psychological stress.