The composition and structure of polymers may be tailor-made to give them various functions and specific characters. Recently, uses of functional polymers in chemical reactions have become increasingly widespread and are one of the important and rapidly developing fields of polymer science. Polymer catalysts are an important kind of functionalized polymers, and have been receiving more and more attention. The polymer catalysts consisting of polystyrene with AlCl_3 and BF_3 have been made by Neckers and