Whether or not you can swim with moderate COPD depends on your condition. If you are in the acute exacerbation stage, you can’t swim, but if you are in the stabilization stage, you can swim, but you have to pay attention to moderation. Chronic Obstructive Pulmonary Disease (COPD) is an abbreviation of chronic obstructive pulmonary disease (COPD), which can be categorized into four grades: mild, moderate, severe, and very severe according to pulmonary function tests. Although it is said that proper exercise is good for health, moderate COPD patients are not allowed to engage in such exercises as swimming during the acute exacerbation stage, as acute exacerbation of the disease may be life-threatening and patients need immediate medical treatment. However, if the individual’s condition is in a stable stage, moderate patients with chronic obstructive pulmonary disease can swim to enhance lung function and improve their physical fitness, but the intensity and duration of swimming should be controlled, whether it is swimming or using other forms of exercise, do not overdo it, and need to pay attention to avoiding cold and infection. Since chronic obstructive pulmonary disease cannot be completely cured, long-term management of the disease is something that patients must pay attention to. Individuals should pay attention to observing their condition on a daily basis, avoiding cold and infections, and must seek timely medical attention if symptoms suddenly worsen.