Mulberry (Morus alba L.) was considered as delicious and nutritious fruit,but difficult to storage,which was an obstacle for selling and further processing.The objective of this study was to explore corruption control techniques and relative mechanisms for postharvest mulberry."Dashi" mulberry was used as materials,effects of exposure to optimal concentration (2 ppm) of ozone and per-cooling on postharvest physiology quality were investigated.Results indicated that mulberry fruits with ozone and per-cooling treatments had higher levels oftitratable acid contents,total soluble solids,hardness and color,and also reduced decay rate,respiratory intensity,PPO activity compared to the control group.Preservation mechanism and pathways were explored through the ways of cell ultrastructure and cell wall components.Results declared that ozone treatment could induce epidermis stoma shrink,inhibit bacterial infection,reduce water transpiration,significantly delay the decomposition of the cell wall and autolysis epidermal tissue degradation.