Lignosulfonate-polyethylaniline　(LSP)　composite　was　prepared　via　an　in-situ　polymerization　from　N-ethylaniline　(NEA)　monomers　with　using　lignosulfonate　(LS)　as　a　dispersant.　The　adsorption　performance　of　silver　ions　on　the　LSP　composite　was　examined　under　different　adsorption　conditions.　The　results　showed　that　the　structure　of　polyethylaniline　was　not　destroyed　by　the　introducting　of　LS.　Adsorption　performances　of　silver　ions　onto　LSP　composites　prepared　under　different　LS　feed　contents　are　quite　different.　Meanwhiles,　adsorption　conditions　including　adsorption　time,　initial　silver　ion　concentration　and　adsorption　temperature,　greatly　affected　the　adsorption　performances.　When　the　LS　feed　content　was　10%,　the　obtained　LSP10　composite　exhibited　an　optimal　silver-ion　adsorption　capacity　with　saturated　adsorption　capacity　of　1799.8　mg/g.　Furthermore,　the　adsorption　mechanism　was　verified　by　measuring　the　decline　in　pH　value　of　the　silver-ion　solution　during　the　adsorption　process,　and　by　characterizing　the　product　of　the　LSP10　composite　after　adsorption.　The　results　showed　that　silver　ions　were　reduced　to　silver　nanoparticles　with　diameters　of　8-72　nm　during　the　adsorption　process　by　ions　exchange　and　redox　reaction　between　the　LSP10　composite　and　silver　ions.　©　2016,　Editorial　Board　of　«Chemistry　and　Industry　of　Forest　Products».　All　right　reserved.