Nausea with excessive salivary secretion after meals may be caused by physiological factors and pathological factors (such as gastroesophageal reflux and gastric ulcers). 1. physiological factors: may be because the abdomen is cold due to stimulation of the gastrointestinal tract, affecting the digestion, there may be symptoms of increased salivary secretion nausea after meals. 2. Pathologic factors (1) Gastroesophageal reflux: Abnormalities in the anti-reflux structure and function of the gastroesophagus and damage to the esophageal mucosa can lead to gastroesophageal reflux, at which time the stimulation of gastroesophageal reflux may lead to increased salivary secretion after meals, accompanied by nausea and other symptoms. (2) Gastric ulcer: Due to the damage to the mucous membrane of the stomach, excessive secretion of gastric acid, the protection mechanism of the stomach is damaged, and more gastric acid will be secreted after ingesting food, and the stimulation of the ulcerated surface by gastric acid will lead to excessive salivary secretion, nausea, vomiting and acid reflux. If the patient salivation nausea after meals to exclude physiological factors, it is recommended to consult a doctor in a timely manner to identify the cause of the targeted treatment.