More stool residue is not necessarily cancer. If the digestive function is not too good or some diseases lead to digestive dysfunction, the normal food is not absorbed completely in the body, and the stool residue will be more; 3, the overall aspect: find the reason from Chinese medicine, Chinese medicine believes that the deficiency of spleen and stomach can easily cause excessive stool residue, and can be treated by oral prescription of Chinese medicine to strengthen the spleen and stomach. The manifestation of colon cancer is the change of stool habit, i.e., the change of stool regularity and trait, or the situation of blood in stool or abdominal pain, which is a typical manifestation of colon cancer, and the excessive stool residue is not a typical manifestation.