Linear porphyrin-thiophene copolymers were synthesized by linking 5,15-positions of porphyrin with tetrathiophene or bithiophene moieties for preparing conducting polymer. 2,8,12,18- tetraethyl- 3,7 ,13,17-tetramethyl-5,15|dithienylporphyrin 4a ( 45.1% ), 5,15|di|bithienyl| 2,8,12,18|tetraethyl|3,7,13,17-tetramethylporphyrin 4b (61.2%) and their metal complexes were also reported in high yields (>90%) as the monomers. 5,15 |di|bithienylporphyrin and its metal complexes could be polymerized by oxidation using FeCl 3 as oxidant. However, 5,15|dithienylporphyrin and its metal complexes can not be polymerized by same reaction. Their polymers were synthesized by electrochemical oxidation on the gold|plate electrode. The structures of copolymers were identified by elemental analysis and IR spectra. And the conductivity of poly 5,15|di|bithienylporphyrin was measured to reach over 1.0×10 -6 S/cm. Linear porphyrin-thiophene copolymers were synthesized by linking 5,15-positions of porphyrin with tetrathiophene or bithiophene moieties for preparing conducting polymer. 2,8,12,18-tetraethyl- 3,7,13,27-tetramethyl-5,15 | dithienylporphyrin 4a (45.1%), 5,15 | di bithienyl | 2,8,12,18 | tetraethyl | 3,7,13,17-tetramethylporphyrin 4b (61.2% ) and their metal complexes were also reported in high yields (> 90%) as the monomers. 5,15 | di | bithienylporphyrin and its metal complexes could be polymerized by oxidation using FeCl3 as oxidant. However, 15 | dithienylporphyrin and its metal complexes can not be polymerized by the same reaction. Their polymers were synthesized by electrochemical oxidation on the gold | plate electrode. The structures of copolymers were identified by elemental analysis and IR spectra. And the conductivity of poly 5,15 | di bithienylporphyrin was measured to reach over 1.0 × 10 -6 S / cm.