The invention relates to a vertical tire dismounting device comprising a vertical column and a base, wherein the vertical column is provided with a pulley assembling component; the pulley assembling component is provided with two horizontally swingable dismounting tire pressure rollers and a tire dismounting hook component, the tire dismounting hook component comprises a tire dismounting hook bracket provided therein with a slideway locking hook box, a tire dismounting hook locking device, a tire dismounting hook unlocking device, and a tire dismounting hook; a reversible circular table is arranged on the base; and a rotating chuck and a plurality of slideways distributed along the radial direction are arranged on the circular table. The vertical tire dismounting device solves the defectsof a large tire vertical dismounting machine in the prior art, shortens the height of the vertical column, is novel in design, reasonable and stable in structure, easy to operate, convenient and practical, and durable, can disassemble the tire efficiently, improves work efficiency and saves work time.