Exercise cardiorespiratory function measurement is a valid and scientific method to evaluate the tolerance of the cardiovascular system and lungs to exercise and to develop precise exercise prescriptions; the process of exercise cardiorespiratory function measurement: exercise at a slow and gradual pace on a measuring platform, with ECG, blood pressure and lung function monitoring throughout the process, protected and guided by a professional rehabilitator and cardiologist, and stopping exercise according to self-perceived symptoms and monitoring indicators. Preparation for exercise cardiopulmonary function measurement: fasting and no coffee 2-3 hours before the test, no smoking; wearing loose clothing and well-fitting cotton socks; not doing excessive physical activity 12 hours before the test; being able to walk at a speed of 50-60 meters per minute for 5-10 minutes.