Abstract: After harvesting longan fruits,we used sulphur pumigation,radiation with 60Co and Film -reagent(Ⅰ、Ⅱ)to pre-treat them.Then we stored them at 8±1℃ temperature,measured the respiration rate of longan fruits.The result indicated:through the approriate dose of sulphur pumigation,radiation treatment and the film-reagent(Ⅰ、Ⅱ)can reduced the respiration rate or delay the increase of respiration.However,the film-reagent was the best way for prolonging the storage life and increasing healthy fruit rate.