K30 (PVPK30) is widely used in medicine, which is one of the three new medicinal excipients advocated by the international. The most widely used are tablets, granules of adhesives. PvP can also be used as a aid agent for capsules, eye drops and lubricants, injections of aid solvents, liquid preparation of dispersants, enzymes and stabilizers for heat-sensitive agents. Povidone can also synthesize I disinfectant with iodine. PvP can also be used as a low-temperature preservation agent in medicine. The use of PVP products for Excipients has been hundreds of drugs.