Height-adjustable screw rod vertical rod

The utility model relates to a screw rod vertical rod with adjustable height, which comprises a hollow vertical rod body, a plurality of connecting discs are fixedly arranged on the vertical rod body along the vertical direction, and the connecting discs are used for connecting a scaffold cross rod and a diagonal draw bar to play a role in fixing and supporting and ensure the integrity of a scaffold body. An adjustable disc is arranged on the portion, between the connecting discs, of the vertical rod body, the adjustable disc is movably connected with the vertical rod body, and the adjustable disc can move up and down along the vertical rod body so that the height of the vertical rod can be adjusted according to the beam bottom elevation, and a main keel can be placed at the required height; the adjustable jacking does not need to be independently placed at the beam bottom, the investment of the beam bottom adjusting jacking is reduced, construction is facilitated, materials are saved, and meanwhile labor inv