Long-term smoking can not be cleared by drinking tea to clear the lungs, this statement is not based on scientific evidence is wrong. Long-term smoking will directly damage the trachea, bronchial mucosa or glands, this damage is more serious, will greatly increase the risk of lung cancer, life-threatening. Tea is a beverage, although the body has certain benefits, but can not act directly on the lungs, can play a role in clearing the lungs, so this statement is not rigorous, and is not recommended to clear the lungs by drinking tea. Long-term smokers should quit smoking, more outdoors to do sports, more exercise, enhance lung function, promote metabolism. Also stay away from irritating chemicals such as asbestos, arsenic, chromium and coal tar. Diet should eat more fresh fruits and vegetables, and other nutrition should be balanced intake. Long-term smokers should do medical checkups on time, especially lung CT, and also pay attention to symptoms such as irritating cough and chest tightness when they usually occur, and seek medical attention in time.