Different amounts of nano-SiOx were added into chitosan composite membranes.The CO2 permeability property of these composite membranes were measured.Results showed that when the content of nano-SiOx of the composite films was 0.03 g/100mL,CO2 permeability property of the chitosan composite membranes was reduced by 67.30 % compared to the pure chitosan membranes.The diverse composite nano-SiOx/chitosan solutions were prepared.After receiving coating treatment with the solutions,Kiwifruits(Miliang NO.1) were stored under 63%~70% relative humidity at 20 ~ 22℃.The respiration,reducing sugar and titrable acidity were evaluated during the storage.When 0.03 g/100mL nano-SiOx were added and coated on the fruits,breathing peak appeared on the 13 day,which was 7 days delay compared to the no nano-SiOx of chitosan membranes.Reducing sugar and titrable acidity were significantly maintained.These results provided important information regarding the ripening physiology of kiwifruit and indicated that the storage life of fresh fruit was extended by edible coatings containing nano-SiOx.