According to one embodiment, a medical monitor includes a housing, a display panel, a phototransmissive front panel and a support portion. The phototransmissive front panel includes a first surface, a second surface and a locking surface. The first surface faces the display screen. The second surface is located on an opposite side to the first surface and is exposed to an outside. The locking surface is provided along at least one side of the second surface and is located inward of the second surface in the housing in a thickness direction of the display panel. The support portion is provided in the housing. The support portion faces the locking surface from the outside in the thickness direction of the display panel.