Dizziness and difficulty in breathing are caused by the following diseases: 1, cardiac diseases may be considered, patients with atrial fibrillation, arrhythmia, frequent ventricular premature beats, etc., which will lead to insufficient cerebral blood supply of cardiogenic origin, and the patient will have dizziness. At the same time, because of arrhythmia, the patient will have shortness of breath, panic, chest tightness of these symptoms; 2, the patient if dizziness, difficulty in gasping for air, accompanied by swelling of the lower limbs, not able to lie down, to be considered as a manifestation of cardiac insufficiency, heart failure. This situation is mainly seen in patients with basic heart disease, or the patient is elderly, hypertension, diabetes, hyperlipidemia, coronary heart disease, suddenly appeared in the lung infection will trigger the onset of heart failure, it is easy to appear dizziness, gasping for breath.