Air purifying, disinfecting, oxygen supplementing and humidifying all-in-one machine

The invention relates to an air purifying, disinfecting, oxygen supplementing and humidifying all-in-one machine which comprises a casing; a first partition board and a second partition board are arranged in the casing; a humidifying and disinfecting device is arranged on the first partition board; an oxygenerator is arranged below the second partition board and comprises an air intake device anda molecular sieve integrating tower; the molecular sieve integrating tower comprises an integrated tower body; the integrated tower body integrates an adsorption tower A, an adsorption tower B and anoxygen storage tank; an upper end cover is arranged on the top of the integrated tower body; a lower end cover is arranged at the bottom of the integrated tower body; a first air pipe, a second air pipe and a third air pipe are arranged on the upper end cover; and a fourth air pipe, a fifth air pipe and a sixth air pipe are arranged on the lower end cover. The air purifying, disinfecting, oxygen supplementing and humidifyi