Spirometry can be improved through conscious breathing exercises and physical activity. Spirometry refers to a person’s maximum inspiratory volume, that is, the maximum volume of gas that can be exhaled by the lungs, and to a certain extent represents lung function. Lung capacity is related to age, gender, physical fitness, body mass, respiratory muscle strength and other factors. Conscious breathing training can increase the strength of the respiratory muscles, thus increasing lung capacity, such as doing deep breathing training, relaxing the muscles, inhaling deeply through the nose, fully opening the chest, and then holding the breath for a few seconds and then slowly exhaling, which can exercise the expansion of the thorax and the strength of the respiratory muscles. Regular physical exercise can significantly improve lung capacity, especially aerobic exercise such as swimming, running, yoga, slow walking, etc. These exercises require a long and steady oxygen consumption and need to maintain a high level of oxygen intake, in which the body accelerates the entry of oxygen into the lung cavities, thus improving lung capacity. People with underlying diseases should not engage in strenuous exercise, and should exercise appropriately under the advice of a doctor.