Cold dew is a solar term reflecting the characteristics of climate change. People can eat more sesame, walnut, tremella, radish, tomato, lotus root, milk, lily, adenophora, etc. These have the functions of nourishing yin,moistening dryness,tonifying stomach and promoting fluid. At the same time, you can keep a certain degree of humidity indoors, pay attention to supplementing water and eat more fruits such as sydney, banana, cantaloupe, apple, persimmon and raisin.