The present invention relates to a high-voltage electrolysis device for eliminating bad odor and toxic gas using a liquid fertilizer, which directly applies high voltage to water by using a liquid fertilizer as a medium for electric discharge, thereby economically and efficiently removing bad odor and toxic gas, reducing maintenance costs since the removal of secondary contamination by-products due to the elimination of the bad odor and toxic gas and the use of chemicals is not required, and improving the completeness of the liquid fertilizer since the decomposed by-products of the bad odor and toxic gas are naturally added to the liquid fertilizer. To this end, the present invention comprises: a power supply unit for supplying high-voltage power an electric discharge unit having an anode and cathode arranged at both sides thereof in a water tank made from an insulation material for carrying out electric discharge by receiving high voltage electricity from the power supply unit, wherein the cathode is provided to the inside of an insulation case made from an insulation material, and the insulation case provided with an electric connection hole for carrying out electric connection a liquid fertilizer supply unit provided at the upper portion of the inside of the water tank of the electric discharge unit and spraying a liquid fertilizer supplied from the outside to the water tank so as to supply the liquid fertilizer as an electric discharge medium of the electric discharge unit a bad odor aeration unit for sucking in the bad odor toward the low level under water in the water tank so as to carry out aeration and a controller for controlling the operations of the power supply unit, the electric discharge unit, the liquid fertilizer supply unit and the bad odor aeration unit.Linvention concerne un dispositif délectrolyse haute tension pour éliminer les mauvaises odeurs et les gaz toxiques employant un engrais liquide, qui applique directement une haute tension à leau en
