The effects of different packaging films on the quality improvement of postharvest white Hypsizygus marmoreus was studied.The Hypsizygus marmoreus have been treated by ultraviolet-C irradiation and MAP storage at room temperature.The results indicated that white Hypsizygus marmoreus belonges to climacteric vegetables,and the 0.06mm PE film could significantly reduce the respiration rate and the activity of PPO,restrain the growth of microorganism;at the same time,the sensory index,hardness,total soluble sugar content and weight were maintained.