After the combined abdominoperineal resection for low rectal cancer patients, the original normal physiological defecation mode is changed, and an artificial anus is needed for life. For some colon cancer patients, because of the higher risk of intraoperative stage I bowel anastomosis, intestinal rerouting is required first, and then intestinal stage II anastomosis is performed about six months after the first operation. For patients with low rectal cancer and colon cancer with intestinal diversion, postoperative stoma care is especially important. Diet: In principle, there is no need to avoid eating. Eat more fresh vegetables and fruits, and less irritating or flatulent food. Those who have the condition can drink 1-2 cups of sour milk daily to regulate the intestinal flora. For each new food, it is best not to eat too much for the first time, and gradually increase the amount only after no adverse reaction. When the stool volume is low, you can eat more fiber-rich foods. Also pay attention to dietary hygiene to prevent diarrhea. Bathing: Patients can usually bathe once the skin at the stoma has healed. It is best to use a neutral, fragrance-free bathing gel. After washing, dry the stoma skin and replace it with a new stoma bag. Treatment of common complications: Common complications of postoperative colorectal cancer stoma include stoma bleeding, peristomal skin disease, stoma stenosis, stoma hernia, etc. When the stoma bleeds, apply Yunnan Baiyao externally and avoid wiping the mucous membrane of the stoma with dry paper as much as possible, and wash with water if necessary. 2, the peristoma dermatosis is mostly caused by the stimulation of local skin by fecal overflow, or by allergy after contact between the surrounding skin and the stoma bag. Performance of local skin rash, ulcers and redness, etc.. At this time, the skin around the stoma should be thoroughly cleaned, external application of zinc oxide ointment or such as Yi Jinhuang San, can also use petroleum jelly gauze to cover the stoma skin. At the same time, use the stoma bag correctly to avoid leakage of excrement, etc. 3, stoma stenosis is commonly caused by stoma colonic pluritis resulting in stoma narrowing, or due to scar growth caused by incision infection. Mild stenosis can be solved by finger expansion of the stoma, specifically by putting on gloves and choosing a finger of suitable thickness according to the degree of stoma stenosis, slowly reaching into the stoma about 4-5 cm for 15-20 minutes each time, 1-2 times a day, and insisting on about 2 months to effectively relieve the stenosis. In addition, patients can open their mouths and breathe to prevent the increase of abdominal pressure. For stenosis caused by scar growth or stoma stenosis that is not effective by the above methods, it is recommended to go to the hospital in time to avoid delaying the disease. 4. Parastomal hernia is mostly seen in elderly patients, mostly due to the weakening of the abdominal wall and the continuous increase in abdominal pressure. At the beginning of the disease, it appears as a mass around the stoma, and then gradually increases in size and appears when standing, walking or coughing, and disappears when the mass is returned to the abdominal cavity in a lying position or by hand. The swelling impact sensation can be felt when pressing the mass with the hand and coughing. In the early stage of the disease, if the symptoms are mild, an elastic bandage can be applied to the abdomen to reduce the symptoms of organ herniation. If the symptoms continue to progress, the patient should be promptly seen in the hospital.