The working principle of the device is to use the air pump in the analyzer to extract the gas in the warehouse that needs to be analyzed, and the detected value is displayed on the screen through the oxygen sensor, carbon dioxide sensor, temperature sensor, humidity sensor, ethylene sensor and ozone sensor in the analyzer. If it is detected that the carbon dioxide gas content in a library is higher than the user-set parameters, the automatic distribution station is first given an instruction to open the butterfly valve in the corresponding library, and then the carbon dioxide removal machine is given an instruction to instruct the equipment to work automatically to automatically maintain the carbon dioxide gas value set by the user. After the work is completed, the equipment automatically stops working, and then the butterfly valve automatically closes; If the oxygen content of a storage room is detected to be lower than the user-set parameters, the analyzer gives instructions to the oxygen valve on the carbon dioxide removal machine to open it, so that the carbon dioxide removal machine automatically replenishment oxygen when working to automatically maintain the user-set parameters. The device is fully automatic inspection, and the inspection interval can be set according to the user's storage requirements.