Chinese medicine believes that dry eyes are generally caused by insufficient yin and blood in the liver, while dry mouth is generally caused by yin deficiency or body fluid injury. Therefore, dry eyes and dry mouth are mainly caused by yin deficiency. Lycium barbarum is sweet and enters the liver and kidney meridians, which can tonify kidney and replenish essence, nourish liver and improve eyesight, thus treating dry eye. In ancient times, it was thought that Lycium barbarum could quench thirst, that is, it also had the effect of treating thirst. Jujube tastes sweet and flat, and can replenish blood, but blood belongs to yin, which is effective for dry eyes and dry mouth with insufficient yin and blood. Chrysanthemum has a good effect on treating eye fatigue and blurred vision. People in China have known since ancient times that chrysanthemum has the effect of protecting eyes. In addition to smearing eyes can eliminate edema, you can usually drink a cup of chrysanthemum tea, which can make the symptoms of eye fatigue subside. If you drink three or four cups of chrysanthemum tea every day, it will also help to restore your vision.