Discomfort in the lower part of the throat and feeling of chest congestion may be due to inflammation of the throat, lung infection and gastroesophageal reflux. 1. Inflammation of the throat: the mucous membrane of the throat that produces inflammation will be infiltrated by pathogenic microorganisms and inflammatory cells, and discomfort will occur, and when the condition is serious, a feeling of blockage can also occur in the area from the throat to the chest. 2. Lung infections: patients with lung infections may suffer from chest congestion due to lack of oxygen in the lungs as a result of poor breathing. Moreover, lung infections often involve the upper respiratory tract, causing patients to experience itching, dryness and other abnormal sensations in the connection between the throat and the trachea. 3. Gastroesophageal reflux: When food mixed with stomach acid refluxes into the esophagus, these acidic substances will stimulate the whole esophagus to produce uncomfortable feelings, including the upper part of the esophagus and the throat junction and the lower part of the esophagus at the chest. This is why there can be discomfort in the lower part of the throat and a feeling of chest congestion. If the discomfort at the bottom of the throat feels like a blockage in the chest, parents should pay attention to it and communicate with the doctor in time to find out the cause.