The invention relates to new technology and a new method suitable for the storage and fresh keeping of edible mushrooms, belongs to the technical fields of the storage and processing of agricultural products and agricultural horticulture in food science and engineering, and relates to comprehensive technology and a comprehensive method for high-oxygen atmosphere packaging of the edible mushrooms, which can be applied to the storage and fresh keeping of flammulina velutipes, button mushrooms, pleurotus ferulae, lentinus edodes and the like. The edible mushrooms are delicious in taste and rich in nutrients, and have the diet therapy and health care effects of reducing cholesterol, preventing hypertension, gastrointestinal ulcer, hepatopathy and hyperlipemia, resisting cancers, improving organism immunity and the like. The edible mushrooms such as flammulina velutipes, the button mushrooms and the like are fresh food predominantly, but fresh mushrooms are easy to generate brown stain, pileus stretching and decay after picking due to high moisture, and thus the fresh mushrooms are short in refreshing time. The invention adopts the comprehensive fresh-keeping technology and the comprehensive fresh-keeping method such as high-oxygen atmosphere packaging technology (HOAP), natural food preservatives, food absorbent and the like to achieve the aims of retaining the freshness of the edible mushrooms, restraining bacteria, avoiding moisture loss, preventing pileus from stretching and browning, preventing the edible mushrooms from generating peculiar smell and prolonging the storage refreshing time of the edible mushrooms.