In　this　study,　the　enhanced　removal　of　cationic　dye,　methyl　violet　(MV),　from　aqueous　solution　with　NaOH-modified　C.　camphora　leaves　powder　(N-CLP),　compared　with　C.　camphora　leaves　powder　(CLP),　was　demonstrated.　Subsequently,　the　effects　of　solution　pH,　initial　MV　concentration,　contact　time,　and　temperature　on　the　adsorption　of　MV　by　N-CLP　were　systematically　studied.　The　experimental　results　showed　that　MV　adsorption　on　N-CLP　was　pH-dependent　and　stable　adsorption　could　be　achieved　at　pH　4.0-10.0.　Electrostatic　adsorption　and　p-p　stacking　could　be　involved　in　adsorption.　The　adsorption　process　for　MV　on　N-CLP　followed　pseudo-second-order　kinetics　model.　Equilibrium　adsorption　data　were　well　fitted　to　the　Langmuir　isotherm　model.　The　adsorption　process　is　endothermic,　spontaneous　and　random.　The　adsorption　property　of　second-regenerated　N-CLP　and　third-regenerated　N-CLP　still　had　0.85　times　over　that　of　N-CLP　and　the　N-CLP　could　be　used　as　a　renewable　bio-adsorbent　for　removal　the　refractory　pollutants　in　wastewater.