The invention relates to the technical field of display devices, and discloses a wall shelf structure and a wall-mounted display device. The wall shelf structure comprises a fixed support and a movable support assembly, wherein the movable support assembly comprises two inverted U-shaped bent plates. Each U-shaped bent plate is connected with a vertical adjusting threaded rod for adjusting the height of the display device. The two ends of the fixed support are each provided with a long-strip-shaped structure of an installation structure. Each installation structure is a U-shaped bent structure. Each U-shaped bent plate is nested into the corresponding U-shaped bent structure. A driving component driving the U-shaped bent plate to slide back and forth in the horizontal direction is arranged on each U-shaped bent structure. According to the technical scheme, the driving components are rotationally connected to the U-shaped bent structures, the U-shaped bent plates can be driven inside the U-shaped bent structures according to the rotating direction of the driving components, the display device can be adjusted forwards or backwards in the horizontal direction, and horizontal adjustment of the display device is facilitated.