After quitting smoking to clear the lungs can choose food therapy to clear the lungs, as follows: 1, mushrooms to clear the lungs, mushrooms are rich in nutrients, the human body absorbed to improve the immune system, and mushrooms in the polysaccharide nucleic acid will produce anti-cancer effects; 2, grapes to clear the lungs, with the role of heat and phlegm, the effective ingredients contained in the grapes can help the lungs to eliminate toxins, but also to protect the lung mucosa of smokers. Smokers can properly exercise outdoors, choose a place with good air to run, improve the body’s metabolic rate so as to enhance the detoxification function of cells, which is conducive to the recovery of other damaged cells, while smokers can also develop the habit of drinking tea, which can clear heat and detoxify.