There are many diseases that cause oxygen deprivation in the lungs. Chest tightness, dyspnea and oxygen deprivation need to go to the hospital to improve the relevant examinations, such as lung function, chest radiographs and heart examinations. If it is a disease of the lungs such as chronic bronchitis, chronic obstructive pulmonary disease. You can keep an oxygen machine at home, because you may need oxygen for a long time and at any time. If it is caused by an infection, anti-infection treatment is needed along with oxygen. If the lack of oxygen is caused by heart disease, oxygen can be inhaled first, and need to improve the function of the heart, do not do strenuous exercise, strengthen the body exercise, more aerobic exercise, walk after meals to increase the function of the heart and lungs, and do not go to places with serious environmental pollution, which will cause damage to the body.