Chronic granulocytic leukemia is known as chronic granulocytic leukemia, and patients with diarrhea may have digestive tract infections, intestinal dysfunction and other symptoms due to low immunity and resistance caused by leukemia, which are treated in different ways. 1. Digestive tract infection: It is mainly due to the fact that patients suffering from chronic leukemia are susceptible to bacterial or viral infections, which can cause digestive tract infection and stimulate the intestinal mucosa, resulting in diarrhea symptoms. It is recommended to carry out acid-suppressing gastric protection, anti-infection drug treatment, only to control the infection can relieve the symptoms of diarrhea, the drugs include levofloxacin, omeprazole enteric capsules, omeprazole magnesium enteric tablets, rabeprazole sodium enteric tablets and so on. 2. Intestinal dysfunction: It is mainly due to the low immunity and resistance that leads to intestinal dysfunction and breaks the balance of intestinal flora to appear diarrhea. It is recommended to stop diarrhea through montelukast, and then use drugs to regulate intestinal flora for treatment, such as Bacillus licheniformis capsule, probiotic capsule and so on for effective treatment. If the above symptoms occur in patients with chronic leukemia, it is recommended that the use of drugs, under the guidance of a doctor to avoid adverse reactions and effects.