The so-called lung fever, the patient mainly manifests as cough, cough yellow sputum, nasal congestion, runny nose, shortness of breath, irritable heart, dry stools, etc.. The fruits that are white and green in color are cold fruits, such as pears, water chestnuts, sugar cane, watermelon, are all cold fruits. Eat cold fruits, on the one hand, can clear the heat and fire, on the other hand, can also quench thirst, produce fluid, nourish yin, is very suitable for lung heat patients to eat a class of fruits.