2. Pear water has the effects of promoting fluid production, quenching thirst, moistening lung and relieving cough, and has the function of nourishing health. Adding some rock sugar properly when boiling pear water also helps to clear away heat and detoxify. Of course, I can also add loquat leaves, medlar, jujube, lotus seeds and other ingredients to pear water according to my hobby, which can make the taste better.