You can improve your cardiorespiratory capacity through aerobic exercise, dietary regimen, medication and so on. 1. Aerobic exercise: If the general condition is good, aerobic exercise can be carried out, such as walking, jogging, swimming, cycling, jumping rope, climbing mountains, climbing stairs, etc., which can effectively stimulate myocardial contraction, accelerate the heart rate, promote the heart’s ejection function, and increase the lung capacity and cardiopulmonary function. 2. Dietary regulation: if the cardiopulmonary function is poor, should pay attention to light diet, low salt and low fat, eat more fresh fruits and vegetables, eat less greasy and stimulating food, and pay attention to do not overeat, avoid drinking a lot of alcohol and so on. 3. Drug regulation: for some people with poor cardiopulmonary ability or cardiovascular disease, can be under the guidance of the doctor through the oral drug intervention, such as cardiac function is not good oral cardiac drugs, such as digoxin, etc.; accompanied by sodium retention can be used diuretics, such as furosemide; expansion of coronary blood vessels, nitrate and so on. The above drugs should be used under the guidance of a doctor, do not use drugs and change the dose without authorization.