Detecting electrode device

The utility model discloses a detecting electrode device comprising a metal wire, a rod-shaped corrosion-resistant object and a closed part, wherein the metal wire is used as an electrode. The metal wire is embedded and buried in the rod-shaped corrosion-resistant object, and both ends of the metal wire are exposed out; the closed part is positioned on one end of the rod-shaped corrosion-resistant object and is closed with the rod-shaped corrosion-resistant object to be used as a fixed point when the detecting electrode device is used. A position of the rod-shaped corrosion-resistant object, which is near the closed part, is provided with a leakage drainage hole for fluid to leak and guide the flow, and the fluid is extruded by high pressure to the embedding burying interface where the rod-shaped corrosion-resistant object and the metal wire are embedded and buried when the detecting electrode is used to detect the fluid. The detecting electrode device of the utility model can be safely and economically used for a sealed high-pressure corrosion-resistant storage tank of chemical liquid and carries out the detection when an inner lining of the storage tank is broken.