A feeling of obstruction in the chest from swallowing saliva may be considered for diseases such as gastroesophageal reflux disease (GERD), gastric ulcers, and esophageal or mediastinal tumors. 1. Gastroesophageal reflux disease (GERD): stress, overeating and other factors cause dysfunction of the lower esophageal sphincter, and the patient will have symptoms such as heartburn, coughing, feeling of obstruction in the chest when swallowing, regurgitation of acid, belching and so on. 2. Gastric ulcer: ulcers on the inner wall of the stomach caused by Helicobacter pylori infection and other factors, patients will have symptoms such as acid reflux, belching, a feeling of obstruction in the chest when swallowing, and pain in the left upper abdomen. 3. Esophageal or mediastinal tumors: Tumors occurring in the esophagus or mediastinum can compress the esophagus and cause esophageal stenosis, which manifests as dysphagia and a sense of obstruction when swallowing. The feeling of obstruction in the chest when swallowing can also be seen in other diseases, and it is recommended that the patients should seek medical treatment in time so as to avoid delaying the condition.