Using carbon dioxide (CO2) hypoxia insecticidal method, can make the mushroom storage from the impact of natural climate, no insects, not mold, not degenerate, to ensure the market throughout the year. First, use a polyethylene film to make a sealed cover, the size of the custom, generally can accommodate 5-10 tons. The cover is rectangular, with an inspection opening at the top. Put the pieces of shiitake mushrooms into a rectangular or square shape when they are stacked. Piles of three layers, the bottom layer is moisture-proof agent, the middle layer of storage of mushrooms, the upper layer of moisture absorption agent, and then cover and seal. Second, to exclude the air inside the hood, fill with carbon dioxide gas, the general concentration of about 60%, stable for 24 hours, can kill all insects. Third, through the inspection port at any time to check the storage of mushrooms, the determination of carbon dioxide concentration, concentration control as appropriate. 4. After the mushrooms have been exterminated by carbon dioxide, the sealed package will not be regenerated and will not deteriorate. According to market sales, sales can be taken out of the hood in batches. China Agricultural Network Editor