In　this　paper,　we　discuss　the　superconvergence　of　the　＂interpolated＂　collocation　solutions　for　weakly　singular　Volterra　integral　equations　of　the　second　kind.　Based　on　the　collocation　solution　u(h),　two　different　interpolation　postprocessing　approximations　of　higher　accuracy:　I-2h(2m-1)　u(h)　based　on　the　collocation　points　and　I(2h)(m)u(h)　based　on　the　least　square　scheme　are　constructed,　whose　convergence　order　are　the　same　as　that　of　the　iterated　collocation　solution.　Such　interpolation　postprocessing　methods　are　much　simpler　in　computation.　We　further　apply　this　interpolation　postprocessing　technique　to　hybrid　collocation　solutions　and　similar　results　are　obtained.　Numerical　experiments　are　shown　to　demonstrate　the　efficiency　of　the　interpolation　postprocessing　methods.