Betadex Sulfobutyl ether Sodium ( Sulfobutyl ether Beta Cyclodextrin Sodium，SBE-β-CD ) was applied to injectable drugs, main is to improve the solubility of difficult soluble drugs, can make the drug injections in the rapid transfer and reach the required dosage, reduce to the parts of the injected irritating, improve the stability of the drug solution condition, moderate melting blood drug, to improve the safety of medication.