Thirst when sleeping at night is caused by deficiency of kidney yin and body fluid. It is recommended to eat more foods that tonify kidney and yin. 1. Drink jujube tea often: Drinking jujube tea can effectively treat sore throat and pharyngitis, and has a good effect on relieving dry mouth. Take five red dates and scorch them, and pour them into white sugar water for drinking; Or take a proper amount of tea leaves, wrap them in gauze, brew them into strong tea juice with boiling water, add a proper amount of honey and mix well, rinse your mouth every 30 minutes and slowly swallow them several times. 2. Eat more white food. The air is dry in autumn and winter. According to TCM theory, white food can promote lung function and health. Therefore, eating more white food in autumn and winter has a good effect on improving lung function and reducing dry mouth. Hao Shuang Runthroat sugar is also a good choice!