After the occurrence of rectal cancer, the patient’s body and psychology will suffer a double blow, and it is also a great burden for the whole family, and one of the important reasons for the occurrence of rectal cancer is diet, so we should pay more attention to dietary knowledge after the disease. There are some foods that should be strictly limited for rectal cancer patients, mainly including: First, alcohol. Patients had better not drink alcohol, and if they really want to drink, they must control the amount. Because frequent drinking will increase the chance of cancer, such as breast cancer, primary liver cancer, esophageal cancer, colon cancer, etc. Second, meat food. It is generally not recommended to eat meat food. If you want to eat, it is better to eat poultry or game, not red meat. Because red meat can increase the risk of cancer, such as the common colon cancer, kidney cancer, breast cancer, etc. Third, fat. Rectal cancer patients must limit high-fat food, especially animal fat. It is better to eat vegetable oil in daily stir-fry, and the amount should be controlled. Fourthly, eat less salt. Eating more salt is bad for the body, so rectal cancer patients should pay more attention to the salt intake, preferably below 6 grams per day. In addition, I believe we all know that we should not eat unclean food, even for healthy people, and we should not eat food stored for a long time or food containing a lot of additives. Moreover, patients should also pay attention to the cooking method of food, preferably boiled, steamed, fried food. In general, after getting rectal cancer, patients must be cautious in their diet so that their body can recover faster and better.