There are many causes of nausea and vomiting after eating, such as improper diet, pregnancy, digestive system diseases, etc. It is necessary to visit a hospital to determine the cause and treat the symptoms. Common causes and treatments a, improper diet 1, food stimulation: such as eating too much spicy, greasy, dry, hard, cold and other stimulating food, resulting in indigestion or gastric mucosa damage, will feel obvious stomach discomfort, nausea and vomiting after eating. You can chew gastrointestinal tablets, or take digestive enzymes after meals, which can usually provide quick relief. If the situation still persists, it is best to go to the hospital for further examination; 2. Food poisoning: If you eat uncooked autumn bean curd, soy milk, poisonous mushrooms, etc., you will feel uncomfortable in the stomach, nausea and vomiting after eating, and may also have cold sweat, fever, cold hands and feet, dizziness and other symptoms, you need to quickly seek medical attention and follow medical advice for gastric lavage. Second, digestive system diseases 1, stomach diseases: chronic gastritis, gastric ulcer, gastroesophageal reflux, gastric polyps and other diseases due to the stimulation of gastric acid secretion after eating, causing stomach discomfort, can be used symptomatically bismuth potassium citrate to protect the gastric mucosa and relieve symptoms; 2, intestinal diseases: pyloric obstruction, intestinal obstruction, intestinal polyps and other diseases due to obstruction of food digestion channels, often feel upset stomach, nausea and vomiting after eating, can go to the hospital According to the condition of gastroscopy, colonoscopy and ultrasound examination to confirm the diagnosis, usually take conservative treatment, the more serious conditions require surgery; 3, other: acute and chronic hepatitis, cholecystitis, pancreatitis and other diseases can be further confirmed through blood tests, abdominal ultrasound, abdominal CT and other examination methods, symptomatic treatment. Third, pregnancy women of childbearing age also need to consider the early pregnancy reaction to pregnancy, can use HCG pregnancy test paper to determine, it is best to go to the hospital through serum hCG and ultrasound examination to determine, delicious containing sour plum, sugar ginger tablets and other foods to reduce nausea and vomiting feeling. Fourth, other diseases 1, heart disease: the location of the stomach and the heart is closer, and by the innervation of the vegetative nerves, both pain with nausea and vomiting symptoms, severe stomach pain may also induce coronary heart disease, angina attack, precordial area squeezing-like, knife-like pain, sometimes associated with epigastric pain discomfort, this situation should be alert, timely medical care, coronary angiography and other tests, such as confirmed sublingual nitroglycerin; 2. Diabetes: diabetic ketoacidosis can also cause nausea and vomiting, you can check urine routine and blood sugar, check urine ketone bodies and blood sugar levels, improve blood gas examination if necessary, after diagnosis usually rehydration to correct electrolyte imbalance, lower blood sugar, remove ketone bodies, while supplementing insulin. Attention to eating stomach upset nausea and vomiting, should pay attention to daily conditioning, three meals as far as possible to choose light and easy to digest food, drink more water, moderate consumption of fresh fruits and vegetables to supplement vitamins, such as cabbage, pumpkin, pears, peaches, etc., while limiting smoking, drinking alcohol, early to bed and early to rise, maintain a good mood, etc..