A　polypyrrole　derivative,　poly　(3-valeroylpyrrole)　(PVPy)　with　acyl　substituents　was　synthesised.　The　chemical　structure　and　properties　of　the　polymer　were　characterized　by　Fourier　transform　infrared　spectroscopy　(FT-IR),　1H-nuclear　magnetic　resonance　(1H-NMR),　ultraviolet-visible　spectroscopy　(UV-Vis),　thermal　gravimetric　analysis　(TGA)　and　photoluminescence　spectroscopy　(PL).　TGA　results　indicate　that　PVPy　is　decomposed　at　222°C.　The　conductivities　of　PVPy　doped　with　iodine　and　concentrated　sulfuric　acid　(98%)　are　0.52　S/cm　and　0.28　S/cm,　respectively.　UV-Vis　reveals　the　energy　band　gap　of　PVPy　is　2.16　eV.　The　PL　of　PVPy　was　also　investigated,　the　result　shows　that　PVPy　is　a　good　photoluminescence　material　and　strong　blue　fluorescence　can　be　observed　when　the　excitation　wavelength　is　346　nm.