Medical stone is a special nonmetallic mineral resource, which looks like a spot, yellow or white, much like a wheat grain. Li Shizhen, a great medical scientist in the Ming Dynasty in China, recorded in Compendium of Materia Medica: "It is shaped like a ball of wheat and rice, with particles such as beans and rice, and its color is yellow and white." Therefore, Maifanshi got its name.

Through analysis and determination, medical stone is a subvolcanic rock, which contains more than 20 kinds of trace elements beneficial to human health, such as iron, magnesium, potassium, sodium, calcium, manganese, zinc, phosphorus, silicon and sulfur. Maifanshi is sweet and non-toxic. It is mainly used for treating various carbuncle and back hair. It has certain curative effect on senile arteriosclerosis, and has diuretic, stomach invigorating and liver protecting effects. Medical stone can adsorb germs and bacteria on the human body surface, promote dermatoses such as dermatitis, itching and dryness, and at the same time adsorb dirt on the skin surface, keratinize excess fat of skin and cells, and restore skin elasticity. It can absorb various toxins excreted in the body and beautify the skin. It is called health medicine stone. The water soaked with medical stone is equivalent to mineral spring, and medical stone is also an excellent natural food preservative and refrigerator deodorant.

1983, the staff of Shenyang Institute of Geology and Mineral Resources discovered a high-quality medical stone named Chinese medical stone in Pingdingshan, Naiman Banner, Tongliao City, Inner Mongolia.