Constipation is a common symptom of the gastrointestinal tract that reduces the number of bowel movements, the volume of stool, dry stools, and the effort to defecate and seriously affects normal life. The prevalence of constipation is as high as 27%, with more women than men and more elderly than young adults. Constipation has a high incidence and complex etiology, and can seriously affect the quality of life. Constipation is often manifested as: reduced frequency of stool; difficult and laborious defecation; poor defecation; dry stool, unclean feeling of defecation; often accompanied by abdominal pain or abdominal discomfort; some patients are also accompanied by insomnia, irritability, dreaminess, depression, anxiety and other psychiatric disorders. Constipation accompanied by blood in the stool, black stool, and even anemia, wasting, etc. may be alarm signs of some diseases. If it occurs, you should go to the hospital for further examination. If constipation is chronic and worsens in the short term, colon cancer should be excluded first. In the diagnosis and differential diagnosis of constipation, necessary tests should be done according to clinical needs. To sum up, since constipation is a more common phenomenon and the severity of symptoms varies from person to person, most people often ignore it, thinking that constipation is not a disease and does not need special treatment. But in fact, constipation is very harmful, and some malignant diseases of the digestive system and constipation are directly or indirectly related, and should be given sufficient attention.