The application of in- situ Raman spect roscopy , particularly surface enhanced Raman spect roscopy (SERS) , in elect rochemist ry is reviewed , including elect rosorption , elect ro2 plating , corrosion , conducting polymers , batteries and nonaqueous media. Recent work on ex2 tending Raman study to t ransition metal surfaces as well as semiconductor surfaces are also out2 lined. The current advance in SERS study and the prospectus are also given.