More than a month. According to the food knowledge, cabbage can be stored at room temperature for five days and in the refrigerator for more than a month. Under normal temperature conditions, cabbage should be placed in a plastic bag. The plastic bag should be opened properly for ventilation. The skin of cabbage will easily lose water and become wilted after being placed in the refrigerator. Before placing it in the refrigerator, the cabbage should be properly washed and the moisture on the surface should be wiped off. , wrapped in a plastic bag.