Chinese medicine advocates proper taboos, while western medicine generally does not advocate taboos. Western medicine attaches importance to the relationship between diet and diseases and does not always oppose taboos. For example, foods contaminated with aflatoxin cannot be eaten; Burned food is easy to denature protein, and pyrolysis and thermal polymerization are easy to produce polycyclic aromatic hydrocarbons, which are harmful to human body, so it is not recommended to eat, and smoked fish and bacon are not recommended to eat more.

Alcohol will reduce the detoxification function and biotransformation function of human body and reduce immunity. Alcohol increases the activity of carcinogens in the body and is cytotoxic, so it is not suitable for drinking. Choose foods with high nutrition and low irritation after operation.

The staple food should be the variety of patients' daily habits, and adding glutinous rice porridge and glutinous rice porridge is beneficial. Non-staple food should be fresh meat, eggs, vegetables and fruits. After operation, the patients ate 3 ~ 5 meals a day, and their appetite gradually increased. Many patients can recover their preoperative appetite after half a year.