If you feel out of breath when you walk, it is mainly due to poor lung function, obesity, lack of exercise, and poor heart condition. At this time is the need to go to the hospital to do pulmonary function, electrocardiogram, lung CT and cardiac ultrasound examination. If the condition is caused by lung disease, it is usually necessary to treat with cough, anti-inflammatory and asthma medication. If the condition is due to a bad heart, heart-strengthening and diuretic medications are needed. Usually high blood pressure also needs to be controlled within the normal range. You also need to exercise appropriately, and you need to choose the right exercise program according to your specific situation. If you have obesity, you need to pay attention to the appropriate activities, and you need to pay attention to diet.