A vertical type air humidifying and purifying machine, comprising a front casing, a rear casing, a humidifying unit, an ultraviolet light purifying unit, a motor-fan unit and a negative ion generator; in which the front casing and the rear casing are assembled correspondingly with each other, and the humidifying unit, the UV light purifying unit, and the motor-fan unit are disposed orderly between the front and the rear casings, and the negative ion generator is installed at an air outlet of the motor-fan unit; ON-OFF switches being respectively provided on the humidifying unit, the UV purifying unit and the negative ion generator for ON-OFF switching.