Abstract: Research progress of pressure hydrometallurgical technologies in treating molybdenite concentrate was summarized in order to make molybdenite conlentrate pressure hydrometallurqical professionals understanding oxygen pressure cooking method more comprehensive and system thereby promoting the development of oxy pressure cooking technology.The physical and chemical principles，process features and industrial application of acid leaching as well as alkaline leaching in extracting molybdenum from molybdenite concentrate were introduced.Both advantages and disadvantages of different pressure hydrometallurgical technologies in treating molybdenite concentrate were stated.Pressure acid leaching technology，which usually employs nitric acid as a catalyst，can realize oxidative decomposition of molybdenite concentrate at high temperature and high oxygen pressure; It has advantages of fast reaction rate，great investment benefit and high molybdenum conversion rate，but also suffers from serious equipment corrosion，uncontrollability of reaction parameters and nitrogen pollution etc.Compared with the pressure acid leaching technology，pressure alkaline leaching technology has advantages of higher metal recovery，less corrosion，milder reaction condition，lower impurities in resultant solution etc..However，there are some shortcomings in alkaline leaching，such as higher consumption of NaOH，large quantilies Na2SO4 which was difficult to handle.Based on analysis of the present pressure leaching technologies，technical problems to be solved and new research directions were raised for further study of pressure hydrometallurgy of molybdenite concentrate.

Key words: Molybdenite concentrate, Pressure hydrometallurgy, Oxidation, Acid leaching, Alkaline leaching, Activator