Possible causes of chest congestion like choking on something are: heart disease, gastroesophageal disease, lung disease, etc. 1. Heart disease: such as coronary atherosclerotic heart disease, due to coronary artery stenosis, resulting in insufficient blood supply to the myocardium, cardiac ischemia and hypoxia, there will be panic, chest tightness, resulting in chest congestion like choking on something. 2. Gastroesophageal diseases: such as gastroesophageal reflux disease, esophageal cancer, gastric cancer, etc., due to the stimulation of esophagus by refluxed gastric acid, or the blockage of tumors in esophagus, cardia of stomach, etc., the above mentioned symptoms will appear. 3. Lung diseases: such as lung inflammation, lung tumor, etc., will affect the respiratory function of the lungs, resulting in poor breathing and the feeling of chest congestion like choking on something. If you have symptoms of chest congestion like choking on something, you must consult a doctor in time to avoid delaying your condition.