Feeling like there is something blocking the chest may be caused by upper gastrointestinal diseases, heart diseases, lung diseases and so on. 1. Upper gastrointestinal diseases: such as esophageal cancer, pancreatic achalasia, gastritis, gastric ulcer, etc., can be due to delayed and retained food through the thoracic esophagus, or excessive secretion of gastric acid, reflux stimulation of the esophageal mucosa, resulting in the post-thoracic bone and the subxiphoid process of blockage, burning, and chest tightness and other discomfort. 2. Heart diseases: such as angina pectoris, coronary heart disease, myocarditis and heart failure can damage the heart muscle, anterior cardiac pain, chest tightness, dyspnea, fatigue and other symptoms, the pain can be radiated to the upper limbs, the back and other locations, the patient feels like there is something blocking the chest. 3. Lung diseases: such as chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, massive pneumonia, lung tumors and other diseases can cause respiratory function impairment, dyspnea, the patient may feel like there is something blocking the chest. Feel like there is something blocking the chest, it is recommended to go to the hospital as soon as possible for further diagnosis and treatment, to clarify the specific causes of the disease, so as not to delay the condition.