The efficacy of pear juice is as follows: 1, thirst quenching: because from the point of view of Chinese medicine, pear juice is cool, sweet, slightly sour, for the thirst, dry mouth, hoarse voice caused by fever, appropriate consumption of pear juice, has the role of generating fluid in the mouth, quenching thirst; 2, moisten the lung and resolve phlegm: because pear juice into the lung meridian, for the cough, cough phlegm, cough blood caused by lung dryness, appropriate consumption of pear juice, by moistening the lung meridian and have the role of cough, stop phlegm.