This　paper　investigates　the　mechanical　properties　of　CNT-reinforced　composites　via　meshless　method,　and　material　nonlinearity　of　its　constituents　is　considered.　An　equivalent　continuum　simulation　is　employed　to　evaluate　the　microstructure　of　CNTs,　based　on　that,　both　two-dimensional　simplified　and　three-dimensional　models　are　introduced　separately.　A　plasticity　model　is　adopted　in　the　interface　between　reinforcement　and　matrix.　The　effect　of　van　der　Waals　forces　between　CNTs　is　also　considered　by　uniformly　aligned　transverse　springs,　which　are　continuously　connected　to　nanotubes　along　their　length.　Parametric　studies　of　the　mechanical　properties　with　varying　spring　stiffness　are　carried　out　to　prove　the　suitability　of　Winkler＇s　multi-spring　model.　The　governing　equations　of　motion　are　obtained　by　establishing　energy　functional,　and　displacement　fields　in　the　spatial　domain　are　discretized　by　the　moving　least-squares　(MLS)　approximation.　The　effects　of　length　of　reinforcement,　node　distribution　and　influence　domain　are　also　investigated,　and　the　stability　and　precision　of　the　presented　meshless　method　are　validated　by　convergence　and　comparison　studies.