Through the interaction between the external filling data of the grounding electrode and its internal electrolytic ion filling data, the chemical treatment of the shell soil is carried out to reduce the resistivity of the shell soil. At the same time, a transition zone is formed between the slow-release grounding electrode and the earth soil, which increases the equivalent cross-sectional area of the grounding electrode and the contact area of the soil, eliminates the contact resistance between the grounding body and the soil, improves the electric field distribution in the ground, and the filler has good permeability, It penetrates into the soil and rock fissures to form a network of tree roots, which increases the drainage area in the ground The device has strong automatic adjustment function, which can supplement conductive ions to the soil around the electrode from time to time and improve the resistivity of the surrounding soil The content of active ions in soil is one of the factors affecting the grounding resistance. Many compounds containing active electrolytic ions in soil are rare, and a simple grounding body will not meet the grounding requirements. Through experimental comparison, reversible slow-release filler is added to the grounding electrode. The filler has no toxic and side effects. In the long-term cooperation with metal electrode, it has achieved good results in ion generation and corrosion prevention of copper alloy. Through electrolysis, the ions in the surrounding soil can be effectively absorbed and released to the earth, so as to improve the soil moisture.