The invention discloses a Pb / PbCl2 solid non-polarized electrode. The electrode comprises a lead wire electrode core, an electrolyte mixture, an electrode shell, an electrode sealing cover and an electrode cap, wherein the lead wire electrode core is connected with the electrode cap through a wire, and the electrolyte mixture comprises electrolyte PbCl2, inert electrolyte NaCl and electrolyte filler kaolin; wherein the electrode shell comprises an electrode outer-layer shell and an electrode inner-layer shell located in the electrode outer-layer shell, a small hole with the diameter of D3 is machined in the bottom of the electrode inner-layer shell, the electrode outer-layer shell and the electrode inner-layer shell are both filled with an electrolyte mixture, and the lead wire electrode core is spiral; the electrode is buried in an electrolyte mixture filled in an electrode inner layer shell; the length L1 of the electrode outer-layer shell, the length L2 of the electrode inner-layer shell and the diameter D2 need to meet the relational expressions D2>3D3 and L2 >L1-L2. The electrode has advantages of small range potential, good stability, low manufacturing cost and the like, and can well meet the application requirements of actual engineering of ground object physical electromagnetic method exploration.