The utility model relates to a polar plate for an electrobath, in particular to an embedded polar plate used for an oxyhydrogen generator electrobath. The embedded polar plate is characterized by being formed by a polar plate embedded body (1) and a polar plate (2) which are embedded into a whole. The embedded polar plate is resistant to corrosion of electrolyte in both liquid and gas states, has increased ability to be resistant to oxidization and erosion, long service life, good insulating property, high operating factor, low cost, simple structure, simple and convenient assembly, and convenience for slag drain and liquid addition.