The diet after gastric cancer surgery is mainly divided into two stages: 1. Post-surgical recovery stage. A gastrointestinal decompression tube is usually placed for decompression after gastric cancer surgery, while observing whether there is anastomotic bleeding. Usually, the gastric tube is removed after the anal discharge on the 3rd day after surgery, and a small amount of water is started, 1-2 sips each time, and you can drink once in 1-2 hours. If there is no abnormality, you can start to drink thin rice soup with salt on the 4th day, and start to eat semi-fluid diet such as thin rice and thread noodles on the 5th day, and you can start to eat soft dry rice after half a month.2. In the long-term maintenance stage after surgery recovery, due to the volume reduction of stomach or complete removal of stomach, nutrition absorption will be affected to some extent, so special attention should be paid to adjust the diet. There are various sayings about the dietary contraindications for malignant tumor patients, so much so that people are overwhelmed. Generally speaking, postoperative patients with gastric cancer should pay attention to a balanced diet. In terms of variety, all kinds of foods can be consumed in small amounts, with a high-protein and low-fat diet as the mainstay, and attention should be paid to supplementing vitamins, iron and trace elements to ensure a comprehensive range of nutrients. From the viewpoint of food quantity and frequency, we should pay attention to eating less and more meals, and we can eat 6 meals daily. For patients with major gastric resection, the amount of food can be gradually increased to 3-4 meals per day due to compensatory expansion of the residual stomach.