A skate board is provided to secure stable riding by smoothly steering the direction according to the center of gravity of a user through bevel gears engaged at a truck and to perform stable braking by installing a brake device. A skate board is composed of a plate(10) for forming a foot board; casters(21) installed at the front and rear bottom sides of the plate and combined to both ends of a caster shaft(20); and a truck(30) comprising driving bevel gears(31) fixed to the front and rear centers of the plate, respectively and a steering bevel gear(32) fixed at the caster shaft and engaged with the driving bevel gears. An auxiliary bevel gear(33) is combined to the opposite side of the driving bevel gear.
