The incidence of adenomatous polyps has been reported to be related to viral infection; 2, age The incidence of colon polyps increases with age; 3, embryonic abnormalities Juvenile polyps are mostly misshapen tumors, which may be related to abnormal embryonic development; 4, lifestyle habits Food containing more fiber polyps occur less, and vice versa, smoking is also closely related to adenomatous polyps, smoking history within 20 years Smoking history of less than 20 years more small adenomas, and smoking history of more than 20 years more large adenomas. 5, genetic some multiple polyp occurrence is related to genetics, patients from their parents germ cells inherited defective oncogene APC allele, and another APC allele in the colon epithelium at birth is normal, later when this allele mutation, adenoma occurs at the site of the mutation, this mutation is called somatic mutation. Clinical manifestations: 1, intermittent blood in the stool or blood on the surface of the stool, mostly bright red, resulting in hemorrhage is not uncommon; secondary inflammatory infection may be accompanied by a large amount of mucus or mucus blood stool, there may be shortness of breath, constipation or increased frequency of stool, long-tipped or near the anus may have polyps prolapse out of the anus, or lead to intestinal overturning prolapse. 2.A few patients may have abdominal stuffiness and discomfort, vague pain or abdominal pain symptoms. 3.Low polyps can be palpated by rectal palpation. 4.Anoscopy, rectoscopy or fiberoptic colonoscopy can show polyps under direct vision. 5.Barium enema can show the filling defect. Examination: 1.Low polyps can be palpated by rectal palpation. 2.Anoscopy and colonoscopy can show polyps under direct vision. 3.Barium enema can show filling defect. Diagnosis: 1.History of blood in stool or mucopurulent stool. 2, anal examination or colonoscopy found polyps. 3.Barium enema can show more or less filling defects. Treatment: 1.Surgical treatment (1) single polyp can be removed, plus disease examination at the same time. (2) multiple polyps or polyps with signs of malignancy, can be biopsied through the anal anoscope to exclude malignant changes. (3) Low or long-tipped prolapsed polyps can be removed by anal speculation, rectoscopy, ligation or direct excision through the anus. (4) Wide based or multiple polyps can be resected via the abdomen, perineum, sacrococcygeal part of the intestinal wall. (5) High polyps can be resected by colonoscopy with high-frequency electrodes. (6) Polyps with cancer should be radical resection according to the tumor. 2, drug treatment (1) general small amount of bleeding, to oral antibiotics and hemostatic drugs or Chinese medicine oral or enema. (2) In addition to hemostatic drugs and antibiotics, and vitamin infusion to replenish electrolytes, preoperative preparation, such as blood preparation, should be done for larger bleeding. (3) If the bleeding volume is greater than 800 ml or the blood pressure cannot be maintained, blood transfusion and caesarean section should be performed in a timely manner.