Nausea, regurgitation and vomiting after meals are mostly considered stomach diseases, such as gastritis, gastric ulcer, stomach tumor and gastric dysfunction. 1, improper diet, eating spicy and stimulating food, alternating hot and cold food, mental tension, alcoholism, etc., can lead to damage to the mucosa of the stomach, and food stimulating the mucosa of the damaged area after eating, leading to reactive nausea and regurgitation of the body, and in serious cases, vomiting can occur. 2, long time irregular diet , unsuitable diet can stimulate the formation of inflammation in the stomach, gastric nerve dysfunction, polyps, ulcers, and in serious cases, complicating tumors, all of which can lead to stomach discomfort after meals. At present, it is recommended to conduct gastroscopy directly in the gastroenterology department to directly diagnose the type of damage to the stomach and then treat with medications, including acid suppressants, gastric mucosal protectors, and anti-inflammatory drugs.