Recently, the Department of Anorectal Surgery, Department of Gastroenterology, Endoscopy Center and Department of Anesthesiology jointly performed a successful rectal cancer surgery for an elderly, high-risk patient, who recovered well after the surgery. The patient is a 76-year-old male patient with coronary heart disease and moderate coronary artery stenosis, who had undergone radical gastric cancer surgery 9 months ago and was abnormally weak after radiotherapy and chemotherapy. This situation needs a surgeon to solve. After receiving the consultation notice, Wang Liyong, director of the Department of Anal Surgery, decisively transferred the patient to the Department of Anal Surgery. Due to the patient’s advanced age and frailty, the risks of anesthesia and surgery and the difficulty of surgery are large, so it is a difficult problem in front of the doctors to ensure the patient’s safety while performing rectal cancer surgery, prolonging the patient’s survival and improving the patient’s quality of life. After the discussion of the whole department of anorectal surgery, it was decided to perform laparoscopic exploratory surgery, and the anesthesiology department was consulted to assess the heart and lung function before the operation, so as to be well informed and not to be confused in the face of danger; and the endoscopy center was contacted to perform intraoperative colonoscopy; after full preparation, the anorectal surgery team performed laparoscopic exploratory surgery under general anesthesia on April 10, and because the patient had undergone radical gastric cancer, the abdominal cavity was widely adhered during the operation and could not be separated. So it was decided to turn to open the abdomen in the middle of the operation. During the operation, the endoscopy center was asked to perform intraoperative enteroscopy to exclude the possibility of other colonic intestinal segment tumors, and the operation went smoothly. The patient is now recovering. With the continuous socio-economic development, sudden increase in work pressure, change in living habits, and an increasingly aging population, the types of diseases suffered have gradually evolved from simple single diseases to multiple diseases, and many patients have combined multiple diseases during their consultation. According to research, more than half of the elderly patients who visit hospitals have two or more combined diseases, and many of them need simultaneous treatment or even simultaneous surgery to achieve the best results. Throughout the medical field at home and abroad, integrated treatment, multidisciplinary collaboration and joint development have become the inevitable trend of today’s medical development, and only with the strength of multidisciplinary integrated treatment can we truly provide the best treatment plan for patients. As the largest tertiary general hospital in the aerospace system, our hospital is at the leading level in Beijing in all disciplines with years of medical and teaching accumulation. Relying on the advantages of multidisciplinary integration, our hospital has provided combined and collaborative treatment for patients with a wide range of combined diseases and achieved good treatment results. The successful completion of this type of surgery with multidisciplinary cooperation is also a reflection of the strong strength and comprehensive advantages of our hospital, and also strengthens our conviction to move forward to achieve the goal of creating a third-grade hospital set at the beginning of the year.