A novel kind of conjugated polymer was prepared by an oxidative-coupling polymerization of N-alkylcarbazole and trans-stilbene. The structure of the copolymers was characterized by elemental analysis, H-1 NMR, UV-vis, and FTIR spectra. The copolymers have good solubility in common organic solvents and are thermally stable. Fluorescence spectra showed that these polymers are blue-light-emitting materials.