To improve lung capacity, you can do more physical exercise, deep breathing, singing and so on. 1. Do more physical exercise: more physical exercise is an effective way to improve lung capacity, lack of exercise in the population, overweight people lung capacity will decline, in order to improve lung capacity to do more sports, more exercise, can be jogging, walking, swimming and other physical activities. 2. Do deep breathing: in order to improve lung capacity, to do more deep breathing, including deep and long exhalation and inhalation, lung capacity will gradually increase. 3. Singing: People who sing often need to adjust their qi and luck frequently, so they can improve their lung capacity. In your daily life, you need to stop smoking and drinking, eat a healthy diet, and work and rest regularly. If you have any symptoms of lung discomfort, you should seek medical attention in time.