PURPOSE: A sequencing batch type polluted soil washing system using floatation, a sequencing batch type polluted soil washing apparatus, and a sequencing batch type polluted soil washing method are provided to improve the efficiency of operations by successively operating a plurality of sequencing batch type polluted soil washing units with a pre-determined interval. CONSTITUTION: A sequencing batch type polluted soil washing system using floatation includes at least two sequencing batch type polluted soil washing units(100), a flux adjusting bath(200), a water treatment unit(300), and a controller(400). The washing units implement operations and washing processes with a cycle containing a polluted soil and washing water introducing unit, a high pressure aeration-based mixture, a settling unit, a wastewater draining unit, and a washed soil exhausting unit. The flux adjusting bath is connected to the washing units. Wastewater from the washing units is introduced into the flux adjusting bath. The water treatmen
