Pop-up monitor with double rack gear structure

An electric pop-up monitor is provided. More specifically, a pop-up monitor with a double rack gear structure is disclosed. The pop-up monitor includes a driving unit (30), a rack gear set (27), and a monitor frame (20). The driving unit includes a spur gear set (350, 360) which includes first and second spur gears, and respectively generates first and second rotational motions with the first and second spur gears. The rack gear set includes a rail groove in one surface thereof along a length direction, an outer gear changing the first rotational motion to a first rectilinear motion, and an inner gear changing the second rotational motion to a second rectilinear motion. A rail rail-coupled to the rail groove is placed in the outer gear and formed in the inner gear. The monitor frame includes a support frame (25) supporting a monitor. The monitor frame is fixed by the inner gear which vertically ascends by the second rectilinear motion without forward and rearward movement when the support frame has vertically ascended to the maximum according to the first rectilinear motion.