In order to adapt to the reconstruction of digestive tract, the following principles should be followed: diet should be from thin to thick, from small to large amount, from low to high calorie, so that the intake of sugar, protein and fat can be gradually adapted to the needs of the body. Specific precautions are as follows: 1. After gastrectomy, the volume of the stomach is obviously reduced, so it is necessary to chew and swallow slowly when eating to reduce the burden of the residual stomach. 5-8 times a day, about 50 g per meal, from liquid food, semi-liquid food, soft food, and gradually transition to a normal diet, this process takes 3-6 months, depending on the individual situation, which varies from person to person. 2, the diet should be light, easy to digest as the principle, can eat a little eggs, lean meat, as well as tofu, soy milk, dairy products, fresh fruits and vegetables. Try to use cooking methods such as steaming, boiling, braising and stewing. 3, chew slowly when eating, which can replace part of the function of stomach grinding, while the mouth secrete more saliva to help digestion. 4. It is recommended not to eat fried, spicy, too sweet, too hot and irritating food, not to eat indigestible and too sticky food, such as dumplings, soup dumplings and rice cakes. 5, do not lie down within one hour after meals, you can take a slow walk to increase gastric peristalsis and emptying.