Electrically　conductive　hollow　nanospheres　with　an　average　diameter　between　100　and　200　nm　were　prepared　via　a　one-step　polymerization　of　aniline　in　the　presence　of　lignosulfonate　(LS)　by　using　ammonium　persulfate　(APS)　as　the　oxidant.　The　LS　concentration　and　molar　ratio　between　APS　and　aniline,　the　temperature　and　time　for　polymerization　were　adjusted　to　optimize　morphology,　structure　and　electrochemical　properties.　Uniform　hollow　nanospheres　are　best　obtained　at　a　concentration　of　18　wt%　of　LS,　at　a　polymerization　temperature　at　25　°C,　at　an　APS/aniline　molar　ratio　of　1:1,　and　at　a　polymerization　time　of　1　to　12　h.　This　kind　of　preparation　of　nanospheres　represents　a　simple　and　general　route　to　polymer　hollow　nanospheres　of　controllable　size,　high　stability,　and　optimizable　electroconductivity.　©　Springer-Verlag　2010.