The treatment of diarrhea accompanied by occult blood in the stool needs to be chosen according to different causes. Common causes include bacillary dysentery, intestinal polyps, malignant tumors, etc., which need to be treated with medication or surgery according to the cause of the disease. Bacterial dysentery: patients with diarrhea and bleeding in the stool. Stool routine or culture examination can be carried out to clarify the choice of oral norfloxacin, cefixime and other symptomatic treatment. Intestinal polyps: If there are polyps in the intestines, there may be intermittent symptoms of blood in the stool, and if there is a secondary infection, diarrhea can also occur. Usually it can be clarified by colonoscopy, or it can be removed by colonoscopy. Intestinal malignant tumor: Due to the invasion of tumor, it will lead to the change of stool trait and habit. It can manifest as blood in stool as well as diarrhea symptoms. For malignant tumors can be clarified through enteroscopy and biopsy. And need early surgery and radiotherapy and other comprehensive treatment. There are many possible causes of diarrhea accompanied by occult blood in the stool, and it is recommended to consult a doctor in time for examination and treatment under the guidance of the doctor.