When a patient with chronic constipation comes to the hospital, the first thing the doctor will look for is the presence of warning signs of organic diseases such as tumors. These alarm symptoms include: 1) sudden change in bowel habits in the recent past (normal bowel movements or even diarrhea, but sudden constipation in the recent past); 2) change in the shape of stool (significant thinning of the diameter of the stool or significant grooves on one side of the stool); 3) significant blood in the stool; 4) symptoms of abdominal discomfort (abdominal pain, bloating, abdominal masses, etc.); 5) anemia, wasting, hypothermia, etc.; 6) patients with a family history of colon tumors; 7) patients over 40 years of age who have not received any medical care; 8) patients who have not received any medical care; 9) patients who have not received any medical care; 10) patients who have not received any medical care. 6.Patients with family history of colon tumor; 7.Patients over 40 years old who have not been examined for constipation. Blood in the stool is a very important warning symptom. There are two general conditions when blood in the stool occurs. First, the stool is very dry and hard, rubbing like stones to irritate the rectum and anus, causing anal fissures or hemorrhoids to worsen, which leads to bleeding. Second, the patient himself has intestinal polyps, intestinal tumors and other organic diseases, which can also cause blood in the stool. If a patient has recently developed blood in the stool or has recurrent blood in the stool, he must pay great attention to it! It is very worry that some patients with blood in stool think that blood in stool is hemorrhoid and get some medicine to treat it by themselves, which misses the time of intestinal tumor treatment and finally brings great pain to the patients and their families! If these alarming symptoms above appear, patients (especially those over 40 years old) must go to the hospital as soon as possible and complete relevant examinations under the guidance of doctors. If the examination results are fine, which means that organic diseases are ruled out, treatment for constipation can be carried out next.