Constipation is a common and complex clinical symptom rather than a disease. It mainly refers to a decrease in the number of bowel movements, a decrease in the volume of stool, dry stool and straining to defecate. It must be combined with the nature of the stool, the usual bowel habits and the difficulty of defecation to make a judgment of constipation. If it is more than 6 months, it is considered chronic constipation. Constipation caused by rectal and anal lesions, endorectal prolapse, hemorrhoids, anterior rectal bulge, puborectal hypertrophy, puborectal separation, pelvic floor disease, etc. can consult a gastrointestinal surgeon. Outlet obstruction type constipation is caused by the incoordination of the muscles of the abdomen, anorectum and pelvic floor resulting in obstruction of fecal expulsion. It is particularly common in elderly patients, many of whom have failed to respond to conventional medical treatment. The outlet obstruction type may have the following manifestations: straining to defecate, a feeling of incompleteness or falling, low defecation volume, and a desire to defecate or a lack of desire to defecate. Our department treats outlet obstruction type constipation with predominantly anterior rectal protrusion in a modified PPH style, depending on the patient’s anterior rectal protrusion comorbidity, and with external anal sphincter release or puborectal muscle release. This method was funded by Wuhan Scientific Research Fund and has achieved satisfactory results. Patients are welcome to consult with us.