Polypyrrole　nanoparticles　and　polypyrrole-lignosulfonate　composite　hollow　spheres　were　prepared　by　unstirred　polymerization　of　pyrrole　with　FeCl3　as　an　oxidant.　The　morphologies　and　structures　of　the　polypyrrole　nanoparticles　and　polypyrrole-lignosulfonate　composite　hollow　spheres　were　characterized　with　scanning　electron　microscopy,　transmission　electron　microscopy,　Fourier　transform　infrared　spectra　(FT-IR),　and　wide-angle　X-ray　diffractometry.　It　is　found　that　the　lignosulfonate　content　influences　strongly　on　the　morphology　of　the　polypyrrole-lignosulfonate　composites.　Polypyrrole　nanoparticles　in　mean　diameters　of　160　nm　were　prepared　in　deionized　water　at　25°C　for　24　h　in　the　absence　of　lignosulfonate.　However,　Polypyrrole-lignosulfonate　composite　hollow　spheres　in　outer　diameters　of　180　nm~290　nm　were　obtained　when　the　lignosulfonate　content　was　up　to　12.5%.