EARTH RESISTANCE REDUCTION AGENT

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An earth resistance lowering agent including mixture of bentonite, aluminum hydroxide, graphite and potassium chloride is provided to retain a constant earth resistance after construction, to prevent corrosion of an earth rod, soil contamination and generation of soil erosion by blending the mixture in water in a relative ratio of 1 : 2. The earth resistance lowering agent is manufactured by placing 40 to 75wt.% of bentonite, 7 to 22wt.% of aluminum hydroxide, 11 to 20wt.% of graphite and 7 to 20wt.% of potassium chloride in a ball mill and uniformly blending all of the components; and adding water to the mixture in a relative ratio of the mixture to water of 1 : 2. The agent is used to reduce the earth resistance of an earth rod by filling the agent between outer side of an earth rod(3) and a punctured hole(1) after concentrically inserting the earth rod(3).