The effect of packaging bags with different gas permeability parameters on the quality changes of eggplants during postharvest low-temperature modified atmosphere packaging (MAP) storage was investigated, and suitable packaging film materials for eggplant preservation under low-temperature storage were identified. Five types of high-density polyethylene (HDPE) bags (20 cm×50 cm) with varying gas permeability parameters were used to seal and store eggplants at (12±0.5) ℃ for 30 days. Changes in in-bag gas composition (O2 and CO2); peel firmness; flesh color difference; sensory evaluation scores; and activities of peroxidase (POD), catalase (CAT), and polyphenol oxidase (PPO) were measured during storage. The results showed that all measured indicators were significantly influenced by the gas permeability parameters of the packaging film during postharvest MAP storage. Packaging with O2 and CO2 permeability parameters of (4 623±834) cm3•(m2•d•0.1 MPa)-1 and (18 033±3 356) cm3•(m2•d•0.1 MPa)-1, respectively, achieved relatively stable gas levels, with in-bag O2 of 4.94% (φ)~6.29% (φ) and CO2 of 4.16% (φ)~4.62% (φ) within ten days of storage. After 30 days, the eggplants displayed the highest appearance index (66.11), lowest decay index (18.75), and lowest chilling injury index (7.50), with good preservation of peel firmness and flesh color difference (hue value). Additionally, POD and CAT antioxidant enzyme activities were sustained, and PPO activity remained low. Therefore, this packaging film is a suitable MAP material that can be used in combination with low-temperature storage to extend the shelf life of eggplants by 30 days, thus, providing an important reference for the postharvest storage methods of eggplants during production.