Abstract: Pleurotus citrinopileatus were used to study the effects of bleeding sap of sponge gourd as fresh-keeping agent on Mushroom.The results showed that bleeding sap of sponge gourd could effectively prolong storage stage of mushroom and be conducive to maintaining commodity quality. Of all the treatments, 0.75 volume fraction of bleeding sap of ridged sponge gourd had the best fresh-keeping effect, compared with the control treatment, the emergence of different symptoms of deterioration such as pileus split，color change，decay and smell-up deferred 4～6days; when reserved at 10 0C for 12 days, weightlessness treated with 75% RSG bleeding sap was 54.17% of control treatment, and was lower than control and other treatments highly significantly.