Nowadays,　the　reduction　of　dye　contaminants　in　the　aquatic　environment　has　attracted　widespread　research　attention.　In　this　work,　a　novel　mesoporous　carbon　nanospheres　(MCNs)-based　material　as　an　adsorbent　for　dye　removal　was　achieved　by　the　carbonization　of　a　composite　of　sucrose　and　aluminum　sulfate　without　involving　any　hazardous　activators.　The　as-obtained　MCNs　were　analyzed　by　TG,　XRD,　FESEM,　TEM,　Raman,　BET　and　XPS,　meanwhile　the　batch　experiments　of　Congo　red　(CR),　Malachite　green　(MG)　and　Methylene　blue　(MB)　on　the　MCNs　were　conducted　to　explore　the　impact　of　adsorption　conditions　on　the　adsorption　process,　respectively.　Results　show　that　the　MCNs　exhibit　a　uniform　spherical　morphology　as　well　as　partially　graphitic　structure　with　a　large　surface　area　of　449.25　m2/g,　a　relatively　narrow　pore　size　distribution　and　a　high　pore　volume　of　0.57　cm3　g-1.　The　unique　porous　structure　of　the　MCNs　endows　it　with　high　adsorption　capabilities　for　dyes,　including　CR　(1726.60　mg　g-1),　MG　(980.55　mg　g-1)　and　MB　(708.82　mg　g-1),　suggesting　its　high　adsorption　capability　for　both　anionic　and　cationic　dyes.　Meanwhile,　the　adsorption　process　is　demonstrated　to　follow　the　Langmuir　model　and　pseudo-second-order　kinetic　model,　respectively,　and　the　main　adsorption　mechanisms　may　involve　pore　filling,　7C-7C　conjugation,　electrostatic　attraction　and　hydrogen　bonding.　Furthermore,　the　as-synthesized　adsorbent　displays　good　recyclability　performance　for　remaining　relatively　high　sorption　performance　even　after　five　regeneration　cycles.