Diarrhea is defined as an increase in stool moisture and frequency and can be divided into acute and chronic diarrhea depending on the duration of the disease. Chronic diarrhea is defined as recurrent diarrhea with a duration of more than 2 months or an interval of 2-4 weeks. The following is an introduction to the symptoms of chronic diarrhea The symptoms of chronic diarrhea are different from the causes of chronic diarrhea, the specific symptoms are as follows: 1, diarrhea is often accompanied by a sense of stool urgency and abdominal and perianal discomfort. 2, rectal or sigmoid colon disease is manifested as frequent bowel movements, a sense of urgency, less bowel movements, and persistent pain in the lower abdomen or left lower abdomen, which can be relieved after defecation. 3, small intestine lesions without the sense of urgency, diarrhea, constipation alternately, large volume of defecation, often periumbilical or right lower abdominal pain, intermittent episodes of colic, hyperactive bowel sounds. 4, chronic diarrhea patients due to long-term diarrhea many patients will have severe malnutrition, anemia symptoms and symptoms of water-electrolyte acid-base balance imbalance. The symptoms of chronic diarrhea depend on the etiology and pathogenesis, and the clinical symptoms are different for different etiologies and pathogenesis. The treatment is also individualized and requires etiological treatment, symptomatic treatment and supportive treatment. It is recommended that patients with chronic diarrhea seek medical diagnosis in a timely manner and seek symptomatic treatment according to the cause.