In general, for people who want to gain weight quickly after gastrectomy, they can eat more light food rich in high quality protein. In the current clinical situation, for people after gastrectomy, the volume of the stomach is reduced, the digestive function is relatively reduced, so we should pay attention to eating less and more meals. If you want to gain weight quickly, you can not eat a lot of food at once, which will cause secondary damage to the stomach. You can eat some foods rich in high quality protein, such as beef, fish, milk. Eggs and so on. In addition, the diet must be light, avoid eating spicy, greasy, stimulating food, this kind of food is not conducive to the recovery of the disease, but also appropriate to eat some foods rich in vitamins and fiber, pay attention to rest, do not overwork, but also conducive to weight gain.