There are several factors: 1. From the perspective of Chinese medicine, shortness of breath during meals belongs to the deficiency of the human body, which is often caused by deficiency of Qi and blood. 2. From the perspective of Western medicine, the most significant cause of shortness of breath after meals is heart disease, which is usually significantly represented by coronary artery insufficiency of blood supply. After eating, because the blood is concentrated in the gastrointestinal tract, the blood supply to the heart is relatively insufficient, and when the amount of return blood is insufficient, on top of the original heart disease, there will be serious chest tightness, shortness of breath, precordial discomfort, weakness, etc. 3, shortness of breath after eating is also related to lung insufficiency, when there is pulmonary hypertension, chronic obstructive pulmonary disease, chronic bronchitis, chronic bronchial dilatation and lung function When there is pulmonary hypertension, chronic obstructive pulmonary disease, chronic bronchitis, chronic bronchiectasis and pulmonary insufficiency, there will also be clinical manifestations of typical shortness of breath after meals.