Long-term smoking will affect the respiration, due to the harmful substances in tobacco will be more, long-term smoking can lead to chronic bronchitis, emphysema, and ultimately can lead to the lungs of the blood oxygen exchange obstacles, caused by the decline in blood oxygen levels, hypoxemia, which can be manifested as black lips and purple. In addition, the patient coughing, sputum, asthma symptoms, you need to go to the respiratory internal medicine department to do the examination, to check the lung function, but also need to draw blood tests, do routine blood tests, also need to take a chest X-ray examination. To clarify the cause, to stop smoking at this time, to pay attention to diet and rest, if necessary, can also be treated with oxygen. In the future, you need to pay attention to exercise, pay attention to diet, and breathe fresh air. Through these treatments and attention, most of these conditions will be relieved.