Abstract: Osmotic dehydration（OD）has become a popular topic in research of fruits and vegetable＇s processing recently.This paper reviewed the research situation of OD at home and abroad,it was divided into four categories according to different character,including effective factors of OD,mass transfer kinetics,exploration of assistive technology and combined technology of multi-dehydration.It will provide significant theoretical guidance for its further applications in expanding in fruit and vegetable processing.