Patients after colon surgery should strictly adjust their post-operative diet so as to help them recover after surgery. The post-operative diet of colon cancer should pay attention to the following points. i. If feeding is allowed in the early post-operative period, give patients light and easy-to-digest liquid food or semi-liquid food, such as millet porridge, rice porridge, egg custard, soy milk, tofu brain, etc. Second, eat more fresh fruits and vegetables, preferably in season, after the patient resumes a normal diet. Third, supplement fiber diet, which can ensure smooth stool and protect the trauma surface, also can reduce the contact time with the trauma surface in the stool, effectively promote the healing of the trauma surface, vegetables and fruits rich in dietary fiber, such as celery, eggplant, rape, etc. Fourth, reduce the intake of fat and animal protein in the process of eating, mainly to reduce their decomposers, which in turn can reduce the chance of recurrence of colon cancer. Avoid spicy and hard foods that are hard to digest in daily diet. Sixth, it is to quit smoking and alcohol, in fact, to develop good eating habits, to eat less and more meals, and to avoid overeating. As the saying goes, disease comes from the mouth, so pay attention to the diet so as to reduce the occurrence of various diseases.