The nutritional value of hawthorn slices in water is mainly low in calories, rich in organic acids, and a good source of vitamin C as well as minerals such as potassium, calcium, and iron. Dried hawthorn slices themselves are not low in calories, but because of the small amount of water needed for their infusion, they are not very calorie dense. Hawthorn slices in infused water allow people to drink more water without consuming too many calories like milk tea, sweetened coffee, fruit juice and Sprite. Hawthorn contains hawthorn acid, tartaric acid, and other organic acids, which can promote secretion of gastric juice and saliva, enhance acidity of gastric juice, and have very good appetizing effect after consumption. Dried hawthorn slices are an excellent source of vitamin C. Vitamin C in hawthorn is 89mg/100g, second only to sea buckthorn and jujube and other fruits, which is very rich in common fruits. 110g grams of hawthorn can almost satisfy the vitamin C demand of people throughout the day. At the same time, hawthorn is also a good source of flavonoids and minerals such as potassium, calcium and iron. Hawthorn slices in water is a healthy drink, but patients with gastric ulcers and gastroesophageal reflux should not consume too much.