Eat a full meal feel chest tightness may be caused by heart disease, esophageal disease, gastric disease and other factors. 1. Heart disease: when the patient suffers from coronary heart disease, myocardial ischemia, after eating due to the body’s blood flow redistribution in the gastrointestinal tract to supply the digestive function, can lead to myocardial blood supply is relatively insufficient, which can cause chest tightness, shortness of breath, chest pain and other uncomfortable symptoms. 2. Esophageal diseases: if the esophagus occurs tumors and other occupational lesions, it can lead to poor feeding, esophageal pressure, local compression can produce chest tightness. 3. Gastric diseases: chronic gastritis, gastric ulcer, gastroesophageal reflux and other diseases can cause chest tightness after a full meal, accompanied by acid reflux, bloating and other discomforts. Eating a full meal feel tightness in the chest may also be caused by other reasons, should be timely medical treatment, if necessary, under the guidance of specialists actively line appropriate treatment.