The invention discloses a height-adjustable computer display screen, which comprises a display screen, the bottom of the display screen is fixedly connected with a column, the top of the surface of the column is covered with a box body, and the bottom of the column penetrates into the box body The two sides of the bottom of the column are fixedly connected with connecting blocks, and the side of the connecting block away from the column is fixedly connected with a first slider. In the present invention, a box body, a connecting block, a first slider, a groove, a screw sleeve, a first chute, a fixed plate, a through groove, a bearing, a rotating shaft, a screw, a movable base, a first gear bevel, and a second gear bevel are arranged. , movable column, collar, turntable, handle, card slot, second chute, second slider and card block cooperate with each other to achieve the effect of adjustable height, so that the computer display screen can be flexibly adjusted according to people's actual use conditions. The adjustment reduces the adverse effects of computer display screens on people's health.