Abstract: During transportation,flat peach has a tendency to soften at an accelerated rate under vibration and lead to quality deterioration. In order to understand the softening behavior of the vibrated flat peach,the effect of vibration acceleration,vibration time,vibration mode,packing and temperature on softening of flat peach was studied using a self- made mechanical vibration testing stand.During the low level of vibration acceleration,it was no significant effect that the different acceleration on peach softening.Compared with horizontal or vertical vibration mode,the horizontal and vertical combination of the mode causes peach soften at a higher rate. When the flat peach was vibrated for 3 h,the softening rate was significantly increased. PE net bag can make the vibrated flat peach soften at the rate approximated to soften rate of no- vibratied fruit during the storage period due to its cushioning effect of on cell structure. The vibrated flat peach could maintain relatively lower softening rates under low temperature condition because its respiration was inhibited.