The patient’s head often dizzy, mainly consider the following aspects of the cause: First, to consider the central nervous system, if the patient has hypertension, diabetes mellitus, hyperlipidemia, to consider may be due to cerebral arteriosclerosis, cerebral blood supply is insufficient and other reasons. If the patient’s cerebral blood supply is not a problem, it is also necessary to consider that it may be a manifestation of vegetative nerve dysfunction. In addition to frequent dizziness and lightheadedness, this category of patients will also have chest tightness, shortness of breath, insomnia, anxiety and nervousness. Second, patients often dizzy to consider is caused by systemic diseases, such as hypertension, hypotension, anemia or because of cardiac diseases, such as the presence of chronic cardiac insufficiency, bradycardia, arrhythmia, frequent ventricular premature beats or paroxysmal atrial fibrillation and other acute cerebral insufficiency of blood supply, the patient will also have episodes of dizziness.