Herein,　an　amino-modified　electrospun　nanofibrous　cellulose　membrane　(CA-PVAm)　was　prepared　and　employed　to　adsorb　the　typical　organoarsenic　contaminants　(roxarsone　(ROX),　p-arsanilic　acid　(p-ASA),　and　phenylarsonic　acid　(PAA)).　The　SEM,　FT-IR,　and　XPS　results　showed　that　the　CA-PVAm　composed　of　abundant　nanofibres　and　owned　ample　functional　groups　such　as　-NH2,　-OH,　and　C=O　groups.　The　batch　experiments　demonstrated　that　the　CA-PVAm　exhibited　excellent　adsorption　performance　on　ROX　(186.22　mg　g(-1)),　p-ASA　(69.15　mg　g(-1)),　and　PAA　(62.77　mg　g(-1)),　which　were　15.98,　6.83,　and　6.25　folds　larger　than　those　of　the　pristine　CA.　In　addition,　the　adsorption　process　of　ROX,　p-ASA,　and　PAA　on　CA-PVAm　accorded　with　the　Langmuir　model　and　obeyed　the　pseudo-second-order　model　with　intraparticle　diffusion.　Meanwhile,　the　adsorption　of　ROX　and　PAA　was　endothermic　process,　but　the　exothermic　process　was　observed　during　the　p-ASA　adsorption.　Furthermore,　the　main　adsorption　mechanisms　involved　electrostatic　interactions　and　hydrogen-bonding　interactions.　The　formed　stable　six-membered　structure　between　-NH2　and　-NO2　groups　could　significantly　enhance　the　hydrogen-bonding　interactions　between　CA-PVAm　and　ROX　molecule,　resulting　in　evident　improvement　in　ROX　adsorption.　Importantly,　the　CA-PVAm　displayed　outstanding　reusability　(4　cycles)　and　rapid　desorption　rate.　This　study　probably　provides　an　important　theoretical　and　experimental　basis　for　the　remediation　of　the　emerging　organic　pollutants.