Chest pain and dizziness generally refers to the diseases that cause chest pain and also cause dizziness due to lack of oxygen to the brain tissue, and in a few cases, it is the simultaneous existence of the diseases that cause chest pain and dizziness respectively, which is mostly seen in cardiovascular or pulmonary diseases. 1. At the same time cause chest pain and dizziness (1) coronary heart disease, angina pectoris, aortic stenosis, aortic coarctation, myocarditis and other cardiovascular diseases cause chest pain at the same time, because of the reduction of cardiac output leads to insufficient blood supply to the cerebrovascular dizziness. (2) Pulmonary embolism, severe pneumonia and other lung diseases in causing chest pain at the same time, because the body’s venous blood can not be effectively oxygenated in the lungs resulting in hypoxia can also cause dizziness. (3) Cardiac neurosis or extreme fatigue caused by vegetative nerve dysfunction can also cause chest pain and dizziness. 2. The simultaneous existence of diseases that cause chest pain and dizziness respectively: for example, patients with cerebral infarction have lung infections at the same time, hypertensive patients with rib fractures and so on. Chest pain and dizziness are recommended to go to the hospital for further diagnosis and treatment.