Shortness of breath caused by eating may be caused by gastrointestinal diseases, cardiovascular diseases and pulmonary diseases. 1. Gastrointestinal diseases: there may be gastritis or gastroesophageal reflux disease, food stimulation of the gastrointestinal mucosa during meals can cause reflux of food and gastric acid, which irritates the throat and shortness of breath. 2. Cardiovascular diseases: If the blood supply to the heart is insufficient, food storage and digestion are carried out in the gastrointestinal tract after eating, resulting in the body’s blood being concentrated in these two parts of the body, thus reducing the body’s blood supply to the heart, and ischemia of the heart can also cause shortness of breath and chest constriction. 3. Lung diseases: If the patient himself has some lung diseases such as chronic obstructive pulmonary emphysema, pulmonary heart disease, chronic bronchitis, bronchodilatation and other diseases, the blood oxygen saturation decreases and the partial pressure of oxygen is too low to cause shortness of breath and chest tightness after meals. If the shortness of breath is serious or combined with its symptoms must go to the hospital in time to find the cause of the disease, symptomatic treatment.