Stone is a kind of bio-toxic, harmless and have some biological activity of the compound or medicinal mineral rocks. The stone often in rock, acid magmatic rocks. In addition to the common stone chemical composition Ca, Mg, Si, Al, Fe, K, Na, there is a small amount of rare elements, rare earth elements, radioactive elements. Stone with adsorption, solubility, PH adjustment, biological activity and mineralization of the properties. Stone can absorb the water free of metal ions. Stone containing about 15% Al2O3, is a typical amphoteric oxide in aqueous solution reacts alkaline. Maifanite lower PH value, reacts with acid to improve PH, PH function with two-way adjustment. The blisters had stone, dissolution of the body and the organism can be useful for major elements K, Na, Ca, Mg, P and Si, Fe, Zn, Cu, Mo, Se, Mn, Sr, Ni, V, Co, Li, Cr , I, Ge, Ti and other trace elements. Stone in aqueous solution can allow the amino acids necessary for human body. 
 Stone is mainly used for current medical care, food, beverage and water purification, sewage treatment, antiseptic, deodorant, preservation, decontamination, porcelain making and planting and breeding industry and other fields.