The utility model discloses a height-adjustable liquid crystal display and relates to a liquid crystal display. The height of the liquid crystal display can be quite conveniently adjusted according to requirements of a user. A connection seat of the liquid crystal display is fixedly connected with the upper end of a screw; a central hole is formed in a driven cone gear; a thread inner sleeve is fixed in the central hole of the driven cone gear; the lower end of the thread inner sleeve is rotatably connected with a base; a driving cone gear is meshed with the driven cone gear and arranged on a gear shaft; two ends of the gear shaft are rotatably connected with a bracket; the lower end of the bracket is fixedly connected with the base; a circular ring sleeve is arranged on the gear shaft and sleeved on the screw; the lower end of the screw is in threaded connection with the thread inner sleeve by matching; and a handle is fixed at one end of the gear shaft. When the height-adjustable liquid crystal display is used, the height of the liquid crystal display can be conveniently adjusted according to individual requirements of the user, so labor is saved.