Constipation after colon cancer surgery may be caused by constipation existing before surgery, intestinal adhesion caused by surgery, local edema and so on. It can be relieved by diet, medication and hot massage. 1. Dietary adjustment: postoperative constipation of colon cancer may be caused by constipation before surgery, and there is not much improvement after surgery, so you can eat some fiber-rich foods such as banana, sweet potato, grapefruit and so on. Diet must be light, eat less fat and high sugar, spicy, stimulating, greasy food to relieve. 2. Surgery leading to intestinal adhesion: constipation after colon cancer surgery may be caused by intestinal adhesion or obstruction due to surgery. In mild cases, oral medication or enema can be taken to help defecation or diarrhea to relieve the problem; if it cannot be relieved, specialist treatment is needed to relieve the problem by surgery if necessary. 3. Hot massage: constipation after colon cancer surgery may be caused by local edema, which can be relieved by doing some abdominal massage and applying hot compresses with warm water bag every day to promote local blood circulation and accelerate gastrointestinal peristalsis. If there is constipation after colon cancer surgery, it is recommended to consult doctor in time and adopt corresponding treatment plan under doctor’s guidance.