The causes of nausea and vomiting after meals are physiological and pathological factors, such as cholecystitis or reflux esophagitis. 1. Physiological factors: due to the consumption of uncooked, too greasy food, resulting in increased gastrointestinal digestion and absorption burden, dyspepsia stimulation of the gastric mucosa, thus causing nausea and vomiting after meals. 2. Pathologic factors: (1) cholecystitis: cholecystitis patients nausea and vomiting after meals, especially in eating greasy or spicy food will make the symptoms worse, gallbladder inflammation affects the patient’s gastrointestinal peristalsis, which will lead to the patient’s abdominal discomfort, the patient’s intestinal and gastric peristalsis increases after eating, abdominal distension, nausea and vomiting symptoms. (2) Reflux esophagitis: The most common manifestation of reflux esophagitis is acid reflux and nausea. Nausea is a symptom of gastrointestinal irritation. The contents of the stomach and duodenum reflux into the esophagus, causing mucosal edema, due to acid reflux leading to gastrointestinal retrograde peristalsis, nausea will generally occur. Nausea after meals can also be seen in early pregnancy, increased intracranial pressure and other reasons, it is recommended to go to a specialized hospital, after the cause of the disease is clear, under the guidance of the doctor to carry out further examination and treatment.