Today, more and more people are choosing weight loss surgery to lose weight, but after all, this is a surgical treatment in the stomach of the human body to change the intake and digestion, so does it make a huge difference to our dietary life after the surgery? Taking the more common sleeve gastrectomy as an example, let’s look at the dietary changes after surgery. Sleeve gastrectomy is a laparoscopic operation that removes a large portion of the human stomach, directly reducing its capacity. The residual stomach is “banana-shaped”, with a volume of about 60-80 cm. The effect of this procedure on the body’s intake and digestion is that it limits the amount of food intake, reduces the absorption of nutrients in the food, and also reduces the production of hormones that stimulate hunger, causing a decrease in appetite. These effects are reflected in the daily eating habits above the need to make some changes: First, less food and more meals is the sleeve gastrectomy postoperative diet considerations, people with major gastric resection should eat less and more meals, 6 to 7 times a day, regular and quantitative meals can make the stomach is not empty, but also gradually adapt to the digestive function of the residual stomach. Second, if the patient’s gastrointestinal tract function returns to normal after surgery, gradually increase the amount and type of food, the patient should gradually change from postoperative liquid food, semi-liquid food to soft food or ordinary meal. Third, usually pay attention to the appropriate choice of animal liver, fresh vegetables, etc. After gastric surgery, patients are prone to iron deficiency anemia, so they can eat appropriate lean meat, fish and other foods to prevent the occurrence of anemia. Fourth, when eating meals, only eat drier food and do not drink water, you can drink water after 30 minutes of eating, thus avoiding food being rushed into the small intestine quickly and can pass through the small intestine slowly and promote further absorption of food. Although the sleeve gastrectomy will lead to a change in previous eating habits, the process of this change will help to establish good habits and add a layer of security to the weight loss results. Moreover, the complex eating rules only require attention during the post-operative recovery period, after which time you can return to your normal healthy eating habits.