The invention belongs to the field of corrosion electrochemistry testing, and particularly relates to a corrosion detection electrode in a conductive concrete environment, a preparation method of thecorrosion detection electrode in the conductive concrete environment and a corrosion detection method in the conductive concrete environment. A columnar sample, a hot inlaying layer, an epoxy resin layer, a conductive concrete layer and a wire are all included. In the preparation method, by sample sealing mode of firstly performing hot inlaying and then performing cold inlaying for a test metal, atest surface is enabled to be combined with an inlaying material tightly, a problem that a concrete work electrode is liable to generate gas corrosion in a cement accelerated curing process can be solved, a simple and convenient work electrode preparation method is provided for realizing metal material corrosion electrochemistry detection in the concrete environment, the preparation method not only is suitable for performing corrosion resistance detection for a conductive concrete composite material newly researched and developed on the market, but also can be used for research on electrochemical corrosion mechanism of the metal material in the concrete environment and evaluation on corrosion inhibition performance of an corrosion inhibitor in the internal/external environment of the concrete.