Lemon infused water has no medicinal properties, just some nutrients in the lemon, which have some benefits for human health. Lemon is relatively rich in nutrients, containing sugar, calcium, phosphorus, iron and other minerals, but also contains more vitamin C, citric acid, flavonoids and hesperidin. These nutrients are beneficial to human health. Minerals are essential to human metabolism, vitamin C, flavonoids and hesperidin components, are relatively strong antioxidant substances, beneficial to human health. Lemon in water, lemon in these functional nutrients will be dissolved into the water less, so the human body absorbed and utilized less, it is difficult to achieve the efficacy of the drug. Lemon contains a lot of organic acid, will stimulate gastric acid secretion, peptic ulcer, peptic bleeding, superficial gastritis, reflux esophagitis patients should not eat.