LED display screen mask machining tool

The utility model discloses an LED display screen mask machining tool which mainly solves the problems that the position and the height of an existing LED display screen mask machining tool cannot be adjusted, and the surface of a mask is prone to being damaged. The LED display screen mask machining tool comprises a bottom plate, two supporting plates are arranged on the upper surface of the bottom plate, a circular truncated cone is arranged on the upper surfaces of the supporting plates in the horizontal direction, a through hole is formed in the center of the circular truncated cone, a gear is slidably installed on the upper surface of the circular truncated cone, and a rotating rod is rotatably installed on the circular truncated cone in the vertical direction; the rotating rod penetrates through the through hole and is fixedly connected with the gear, three fixing sleeves are arranged on the upper surface of the circular truncated cone, threaded holes are formed in the fixing sleeves, the fixing sleeves