After gastrectomy, you need to fast for a period of time, and you can eat at a later stage, because the digestive organs include esophagus, liver, pancreas, intestines and so on, besides the stomach, which can fulfill the normal digestive function. However, you need to pay attention to the diet structure and eating habits, such as regular light diet, avoiding stimulating food, etc. After gastrectomy, life and diet will be affected in the short term, and can be gradually restored to normal as the condition recovers. After gastrectomy, it is usually necessary to fast for a period of time, and if the condition permits, you can eat a small amount of liquid food. Common fluids include rice soup, lotus root powder, milk, etc. Semi-fluid diets include egg custard, rice porridge, rotten noodles, etc. For diet after gastrectomy, it is recommended to consult a doctor for guidance.