A caster device comprising: a first caster (11) and a second caster (12) said first and second casters (11 12) being both provided with braking assemblies capable of braking and a brake assembly comprising a first transmission shaft (21) a main pedal (22) and a second transmission shaft (23) the first end of the first transmission shaft (21) is rotatably connected to the braking assembly of the first caster (11) the second end of the first transmission shaft (21) is fixedly connected to the first end of the main pedal (22) the first end of the second transmission shaft (23) is fixedly connected to the second end of the main pedal (22) the second end of the second transmission shaft (23) is rotatably connected to the braking assembly of the second caster (12) the main pedal (22) is movable between a braking position and a releasing position. An operator can brake or release the first caster (11) and the second caster (12) by depressing or lifting the main pedal (22). The structure is simple operation is convenient and the braking reliable.
