The present invention discloses a probe cover dispenser, which comprises a base having a probe cover basin; a probe cover cartridge receiving probe covers; a gravitational member applying gravity to the probe covers; and a feeder assembly arranged between the base and the probe cover cartridge. The gravitational member makes a probe cover fall from the probe cover cartridge onto the base, and a feeder pushes the gravitationally released probe cover to the probe cover basin. Then, the user inserts a probe of an infrared thermometer into the probe cover inside the probe cover basin to sleeve the probe with the probe cover. Via the present invention, the user can fit a probe cover onto a probe without using his hands. Thus, the present invention can effectively reduce the pollution of probe covers and the infection of testees.