The burning sensation in a line from the throat to the stomach may be due to reflux esophagitis, bile reflux gastritis, peptic ulcer, and esophageal cardia laxity. 1. Reflux esophagitis: the gastric peristaltic emptying function is poor, the contents containing stomach acid, through the cardia reflux to the throat, stimulate the mucous membrane of the throat, so you feel a burning sensation. 2. Bile reflux gastritis: bile refluxes from the duodenum to the stomach, damaging the gastric mucosa, and in more serious cases, bile refluxes to the throat, so it feels like a burning sensation in a line from the throat to the stomach. 3. Peptic ulcer: the gastric mucous membrane is damaged by the presence of ulcer surfaces, gastric acid secretion increases to stimulate the gastric mucous membrane, gastric acid also refluxes into the throat, stimulating the mucous membrane of the throat, resulting in a burning sensation from the throat to the stomach. 4. Esophageal cardia dystrophy: neuromuscular disorder of the lower esophagus, resulting in the lower esophageal sphincter dystrophy, food stagnation in the esophagus, stimulation of the esophageal wall mucosa triggered esophagitis with a burning sensation. The burning sensation in a line from the throat to the stomach may be due to a number of factors, and it is recommended to consult a doctor in a timely manner, complete the gastroscopy first, identify the cause of the disease, and treat it as soon as possible.