Plasma waste gas treating device

The utility model relates to a plasma flue gas treatment device which comprises a support base and a shell fixed on the support base; a flue gas inlet and a flue gas outlet are arranged on the shell; at least a plasma reactor unit is arranged in the shell; each plasma reactor unit comprises two groups of electrode brackets and at least a group of plasma reaction elements fixed between the two groups of electrode brackets; the plasma reaction element comprises an anode and a cathode which are correspondingly arranged in parallel, and a control circuit; a medium retaining plate is arranged between the anode and cathode in parallel; the anode and both ends of the medium retaining plate are in insulated and fixed connection with the electrode brackets; both ends of the cathode are directly fixed on the electrode brackets to construct the grounding electrodes together. The plasma flue gas treatment device has the advantages of saving energy, low operating cost, having no secondary pollution, facilitating the environmental protection, being applicable to the treatment of high temperature gas, having the operating temperature of 170-350 DEG C, simple structure, convenient maintenance and small site occupation.