If a patient often has the urge to inhale hard, it is usually considered to be caused by reduced oxygen saturation, insufficient partial pressure of oxygen or high partial pressure of carbon dioxide. The causes of these: 1. Consider respiratory system diseases, such as chronic obstructive pulmonary emphysema, chronic pulmonary heart disease, pulmonary hypertension, chronic bronchitis, chronic bronchiectasis, in these cases there will often be symptoms of forceful inspiration. 2. For some circulatory system diseases, such as coronary artery disease, angina pectoris, chronic cardiac insufficiency, heart failure, there will also be a frequent desire to forceful inspiration, which is directly related to insufficient blood supply and oxygen supply to the heart muscle. 3. This is directly related to the lack of blood supply and oxygen supply to the heart muscle. 3, some patients will also have the above-mentioned typical symptoms if they have phytodysfunction, especially in cardiac neurosis. 4, if patients have various conditions of pneumothorax caused by various factors, they will also have the above-mentioned symptoms.