Cardiorespiratory fitness can be improved by running, swimming, walking, jumping rope, etc. It is necessary to choose suitable exercise methods according to different body types. 1. Running: Running can enhance the body’s immunity, soothe the emotions, improve cardiorespiratory fitness and enhance body coordination. 2. Swimming: Swimming is a sport that can exercise the whole body, promote blood circulation, relieve physical and mental stress, and improve cardiorespiratory function. 3. Walking: Walking is a relatively low-intensity exercise that is suitable for people of all ages. Walking can improve cardiopulmonary function and respiratory function. 4. Jumping rope: By jumping uninterruptedly, the blood circulation of the body can be accelerated, exercising the body’s cardiopulmonary function. Moderate exercise can play a certain effect on the exercise of heart function, exercise intensity should not be too high, so as not to cause damage to the body. At the same time, through the method of exercise to improve cardiopulmonary function only long-term persistence, in order to see better results.