This paper discusses and summarizes the concept connotation, effect and value judgment,genesis and evolution,supporting technology of group polarization of online public opinion. The result shows that the research framework of the group polarization of online public opinion is basically clear, that information is deeply mined, quantitative evaluation of group polarization of online public opinion gradually spreads, however, fast quantitative analysis system and method on the specific social events is required 〖JP2〗to extend. Finally, the research mindset of quantitative evaluation system construction borrowed from potential field thought in physics is given.