An atmosphere dew transformation system device, wherein the atmosphere dew transformation system device comprises an air purification device part and a water preparation device part; the air purification device part comprises a housing and a filtering unit disposed in the housing, the filtering unit comprises a filter screen, a fiber cloth layer, an activated carbon net layer, a drive motor, an orifice plate, an impeller, an air outlet, an ultraviolet germicidal lamp and a control panel; the water preparation device part comprises a housing, a condensing evaporator, a water catching tank, a booster pump, an exhauster, an exhaust plate, and a negative oxygen ion generator, characterized in that the left and right sides at the middle lower portion of the housing are provided with housing openings, the filter screen is disposed in the housing and located at the front of the housing opening, the top end of the filter screen is provided with the fiber cloth layer, the activated carbon net layer is disposed above the fiber cloth layer in a spacing manner, the filter screen, the fiber cloth layer, and the activated carbon net layer are disposed parallel to each other and are fixedly connected to the inner wall of the housing, the orifice plate is disposed above the activated carbon net layer, the orifice plate is fixedly connected to the inner wall of the housing, the drive motor for driving the impeller is fixedly mounted on the orifice plate, an output shaft of the drive motor is connected to the impeller, the top end of the housing is provided with an exhaust plate, the ultraviolet germicidal lamp is disposed on the inner wall of the housing located between the exhaust plate and the orifice plate, and the control panel is disposed on the outer wall of a step of the housing; the water preparation device part further comprises a control panel disposed on the housing, a humidity regulator, an air filter, a water catching tray, a water catching tray water level controller, a filtering system, a reverse osmosis purification system, a nanometer ultraviolet sterilization disinfector, a constant temperature water purification tank, a valve for drinkable neutral water, an electrolytic bath, a valve for drinkable acid water, a valve for drinkable alkaline water,, a compressor, and a tap water or undrinkable water source inlet; the air purification device part and the water preparation device part are connected through a pipeline, and the pipeline is connected between the exhaust plate and the air filter; the atmosphere dew transformation system device is configured in such way that the working principle of the atmosphere dew transformation system device is that: the impeller is controlled to rotate through the drive motor, air enters inside the housing from the housing opening, then the filter screen, the fiber cloth layer and the activated carbon net layer process the air in sequence, the air after being processed, penetrates through the orifice plate and then is disinfected by the ultraviolet germicidal lamp, and the purified air is exhausted to the air filter by the exhaust plate via the pipeline; an air moisture extraction system composed of the humidity regulator, the exhauster, the condensing evaporator and the compressor reduces the temperature of the air to a dew point temperature through the condensing evaporator; under the dew point temperature, the air moisture is extracted and condensed into water globules, then the water globules automatically drop on the water catching tray from the condensing evaporator; the water catching tray collects the water into the water catching tank, the water catching tank controls the booster pump connected to the water catching tank to boost the water according to the water level controller, and the water after being re-purified by the filtering system, the reverse osmosis purification system and the nanometer ultraviolet sterilization disinfector is stored in the constant temperature water purification tank; and the inside of a purified water tank is provided with a water level display and the bottom of the purified water tank is respectively connected to the electrolyzed water supply valve and the electrolytic bath for a user to select to discharge neutral water or make the neutral water pass through the electrolytic bath, and acid water or alkaline water is discharged by the hot water supply valve and the cold water supply valve; and purified and dehumidified air after passing through the air moisture extraction system composed of the humidity regulator, the exhauster, the condensing evaporator and the compressor of the water preparation device part, is discharged by the condensing evaporator via the exhaust plate after passing through the negative oxygen ion generator.