The invention relates to a device for treating organic contaminated soil on a plasma fluidized bed. The device comprises the plasma fluidized bed and a high voltage power supply, wherein the plasma fluidized bed consists of an air inlet, a quartz container, a tetrafluoroethylene base, knife-shaped stainless steel electrodes, a cone-shaped stainless steel net, the organic contaminated soil, a quartz cover and an exhaust port; the cone-shaped stainless steel net is arranged at the central axis at the top of the quartz container, and is fixed directly above the electrodes. The organic contaminated soil to be treated is put in the cone-shaped stainless steel net, a carrier gas is introduced, the high voltage power supply is started, and a non-thermal electric arc plasma is quickly formed between the electrodes under the driving of the carrier gas, so that the carrier gas is converted into active gas containing active species, the organic contaminated soil is driven to form a fluidization state, the plasma fluidized bed is formed, organic pollutants in the soil are degraded and mineralized through a plasma chemical reaction, and the purpose of repairing the soil is reached. The device is combined with double advantages of the plasma and the fluidized bed, and is a new technique with industrial application potential.