Sudden feeling of chest tightness, shortness of breath and dizziness may be a sign of insufficient blood supply to the heart and brain. Patients are advised to check their blood pressure to see if it is caused by high blood pressure. In addition, if the chest tightness is severe, you must consult a hospital in time to check the electrocardiogram, cardiac enzymes, troponin, etc. Dizziness and shortness of breath may be caused by cardiogenic cerebral blood supply deficiency, which needs to be checked and treated in a hospital. If the dizziness, chest tightness and shortness of breath are relieved soon, the problem is generally not serious, but it is necessary to improve the cardiac ultrasound and head CT related examination. If chest tightness, shortness of breath and dizziness occur because of dirty air and poor air circulation, the patient should not be too concerned if these symptoms can be relieved quickly by going to an airy place.