The maintenance of stomach cancer is divided into the following aspects: 1. Before having stomach cancer: 80% of gastrointestinal tumors are related to diet, try to develop good living habits, eat light diet, eat more fruits and vegetables, and try to eat more foods containing more fiber. Try not to eat late at night, try not to eat after 8 o’clock. Don’t smoke or drink alcohol, smoking has certain effect on stomach cancer; 2. After surgery, stomach cancer patients should take liquid and semi-liquid diet, and try to have light diet for 3 months after surgery. Since the digestive function has not recovered after stomach cancer surgery, it is recommended to have fewer and more frequent meals, not too full at one time, and eat more fruits, green vegetables and foods that help digestion; 3. Improve the quality of life and personal hobbies, and develop good living habits, breakfast must be full and well-fed, and not too greasy. Chinese food should also be eaten well on time and in quantity, and dinner should be a light diet. It is recommended that you do not eat snacks 3 hours before going to bed. You can eat a little snack or fried food occasionally, but you can’t let snacks replace your normal diet. Everyone has hobbies, but moderation and eating habits are the same. In general, eat a light diet and try not to eat junk food.