A novel kind of dendronized porphyrin polymers was synthesized by Sonogashira coupling of diethynyl-functionalized porphyrin monomers and diiodo-functionalized macromonomers bearing Frechet-type dendrons. The encapsulation of red-light-emitting porphyrin-containing conjugated backbones into dendronized polymers can not only reduce the aggregation of polymer backbones and the self-quenching of their fluorescence but also endow the porphyrin polymers with good solubility. We also report the optical and electrochemical properties of the porphyrin-containing dendronized polymers.