To determine the micro-perforation packaging parameter as well as the preservation effects for sweet corn. Micro-perforated Polyethylene （PE） bags （35 cm×55 cm）of 40 μm thickness with different numbers of perforations were prepared. The pore size was（0.18±0.005）mm, and the numbers were 2, 3, 6, 9, 20 and 50, respectively. Sweet corns were packaged with the prepared micro-perforation bags and stored at 0 ℃ . O2 and CO2 concentrations in the headspace of packaging were checked, and nutrition indexes, ethanol concentration and sensory quality were analyzed. The respiration rate of sweet corn during the early stage of storage was much higher than that during the late stage, which led to the fluctuation of oxygen and carbon dioxide concentrations in the headspace of packaging. Low oxygen and/or high carbon dioxide concentration was favorable for keeping higher total soluble solid, Vc and soluble sugar concentration in sweet corn but was liable to accumulation of ethanol and production of off-flavor. PE packaging film of 40 μ m thickness with 6 perforations with a diameter of (0.18±0.005) mm had the best preservation effects for sweet corn storage with fine quality for up to 14 days.