Abstract: Effect of modified atmosphere packaging films on the quality of Fuji apples was determined. Fuji apples (5, 7.5, 10, 20 kilogram per package) were packaged in 5 types of plastic film bags and kept at 0℃ and 10℃(transferred to 0℃ after 100 days) for 7 months. At both temperatures, an equilibrium atmosphere was developed during 10 days, the equilibrium content of CO₂ reached 1.8%～5.0%, whereas the equilibrium content of O₂ reached 12%～19% at 0℃, and the atmosphere contained 3.5%～8.0% CO₂ and 5%～16% O₂ at 10℃. Under the same conditions, the atmosphere in 2# package had a maximum of CO₂ and a minimum of O₂. The great-to-little sequence of apple scald rate was 2#＞1#＞3#＞5#. Scald rate, ethanol and acetaldehyde content increased with packaging quantity and temperature became greater. Fuji apples in optimal modified atmosphere package had good quality after storage for 7 months.