Vitamin C and carotene in fresh fruits and vegetables can increase lung ventilation. Eating foods containing at least 300 mg of vitamin C every day can reduce the prevalence of bronchial asthma and bronchitis by 30%. Guidance: each person should eat 400~500g of vegetables and 0/00 ~ 200 g of fruit/kloc every day. Eat more things that are good for the lungs and take a deep breath and cough every day, because this can clean up the garbage in the lungs. Don't go to some factories. Go to some places with fresh air. Also, run and exercise every morning, because it is best not to smoke in the morning air! Eat more foods that are beneficial to lung health care, such as Nanxing pork lung soup, Shashen Yuzhu old duck soup, stewed lean meat with lotus seeds and lilies, crystal sugar, mixed bean sprouts with fungus, Radix Puerariae Qingfei soup, boiled beef lung with radish and almond, smoke less, go to dusty places less, eat more foods that clear lung, such as wax gourd and other things that Chinese medicine says are red, and you can try more, mainly plants (such as tomatoes).