Abstract:In this paper，The fig of Xinjiang Atushi city was used as raw material.The VCcontent，titratable acid content，reducing sugar content，total soluble solids，hardness，weightlessness rate and the moisture content were used as indicators to study the preservation effect of different concentrations of chitosan coating under low temperature storage at 3℃，to seek the best fresh effect.The results showed that，the soluble solids content and weightlessness rate of figs treated with 2.0%concentration chitosan coating were extremely significant compared with the other three groups of treatment （p＜0.01），the application of chitosan can significantly inhibit the content of soluble solids and decrease the weight loss rate of fig；the reducing sugar content was significantly different from the other three treatments（p＜0.05），and the hardness and water content were significantly different from 0.0%and 1.0%chitosan application （p＜0.05），the difference was not significant with the 1.5%chitosan application （p＞0.05），which indicated that Chitosan coating could inhibit the degradation rate of reducing sugar，reduce water dispersion loss，and slow down the softening of fruits to a certain extend.Chitosan application with different concentrations had no significant effect on the changes of VC and titratable acid content of fig.Considering the effect of different concentrations of chitosan coating，the fig had the best preservation effect under the low temperature storage with 2.0%concentration of chitosan.