The symptoms of chest tightness, breathlessness and dizziness after heavy work need to be investigated and then given targeted treatment. If it is caused by lung disease, oral anti-inflammatory, cough, phlegm medication; if it is caused by heart disease, cardiac, diuretic, vasodilator and other treatments; if it is caused by hypoglycemia, glucose can be supplemented in a timely manner. 1. Lung disease: such as chronic obstructive pulmonary emphysema, pneumonia, etc., chest tightness, dyspnea, dizziness and other symptoms, need to be treated symptomatically. Such as chronic obstructive pulmonary disease, acute infection can be treated with antibiotics, such as cephalosporins with cough, phlegm, asthma medication, such as aminophylline. If in the stable stage can be selected according to lung function bronchodilator treatment, commonly used, such as salbutamol and so on. 2. Heart disease: such as coronary heart disease, heart failure, pulmonary heart disease, etc., after exertion can aggravate the condition, you can check the electrocardiogram, ultrasound, etc., the application of medication to improve myocardial blood supply, such as isosorbide nitrate, compound danshen drip pill, etc.; patients with heart failure, feasible cardiotonic and diuretic treatment, such as furosemide, digoxin, can be combined with oxygen therapy. 3. Hypoglycemic reaction: dizziness, panic, severe patients will have dyspnea, chest tightness and other symptoms, can eat cookies, sugar cubes, etc. to ease the symptoms, serious patients, can be applied intravenously glucose treatment. Usually avoid exertion, avoid cold, chest tightness, dyspnea, dizziness and other symptoms, need to go to the hospital as soon as possible to avoid delaying the condition. The above drugs are recommended to be taken under the guidance of a professional doctor.