Objective To introduce the research progress of hydroxypropyl-β-cyclodextrin(HP-β-CD)solubilizing water-insoluble drugs. Methods Refering to documents and reports home and abroad in recent years, then we analyzed and summed up the researches on HP-β-CD. Results The new adjuvant, HP-β- CD has got extensive application and deep research, It is safe with excellent property and gets many inclusion methods. So it is applied extensively on the research of water- insoluble drugs. Conclusion To develop and utilize the new multi- fun...