The present invention relates to a stereo microscope system capable of displaying the same virtual reality on a plurality of auxiliary display units as that realized on the microscope, and the quality of the virtual reality realized on the plurality of auxiliary display units is uniform and unchanged according to a change in the amount of light. The stereo microscope system allows a pair of imaging units to receive light beams passing through the beam splitter of a prism, capture an image, and transmit the image to a processor. The processor digitally processes the images captured by the pair of imaging units and transmits the processed images to first and second display units for display. Therefore, by digitally processing images captured by the imaging units through the processor and transmitting the processed images to each display unit for display, images having uniform quality can be displayed without being affected by a change in the amount of light.