Dragon's teeth, also known as dragon bone, mainly for the ancient fossilized teeth of a variety of large mammals, mainly containing calcium carbonate, calcium phosphate, but also contains a small amount of iron, potassium, sodium and so on. It is sweet, astringent and cool in nature, and belongs to the heart, liver and kidney meridians. It has the functions of calming and tranquilizing the mind, calming the liver and submerging the yang, astringing and fixing astringency, and producing muscle and astringent sores. It can be used to treat symptoms such as restlessness, palpitations, insomnia, epilepsy and seizures; it can also be used to treat irritability, dizziness and dizziness caused by yin deficiency and hyperactivity of yang, and it can also be used to treat spermatorrhea, hyperemesis gravidarum, deficiency sweating, and women's disintegration and leakage, which are astringent and astringent in nature. Dragon's teeth can also be used to treat children's day fishing, hand and foot switches, eyes and eyes, sometimes laughing and crying anger, dragon's teeth can be used with hook vine, cicada slough, vermilion sand and other edible, the role of people is very big.