Recently, there are often letters from patients and family members asking whether there is any dietary contraindication for bowel cancer patients after surgery, for example, it is rumored that cancer patients cannot eat hairy food such as chicken, beef and mutton, seafood and so on. At present, chicken and eggs are the main ingredients of food in the United States and other western countries, and the daily diet is the same as that of Chinese people for a week or even a month; the northwest region of China mainly eats beef and mutton; Japanese people eat raw fish all day long. However, the fact is that the incidence rate of people in these regions is not higher than ours and the treatment effect is not worse than ours. Therefore, we say that there is no scientific basis for this statement. Cancer patients should pay attention to maintain a balanced nutrition after surgery and should not be particularly avoiding food, so as to avoid eating only the same food for a long time and being too partial. Only adequate and balanced nutrition can ensure a better recovery, withstand the blows of chemotherapy and radiotherapy and recover better.