Polystyrene and polyacrylamide prepared by BDC (benzyl diethldithiocarbamate )could be ed as macromolecular iniferter and they initated styrene or acrylamidepolymerization further. The results shoWed that chain enlargement reaction inhomogeneous systems had the character of living radical polymerization and theprodusts still contained iniferter functional groups. Polystyrene macromoleculariniferter can initiate acrylamide polymerizahon in dioxane and thepolystyrene-- block-- polyanylamide copolymers were obtained. Blocking efficiency and polymerization activity were high.