Laser-induced　periodic　surface　structures　(LIPSS)　provide　an　easy　and　cost-effective　means　of　fabricating　gratings　and　have　been　widely　studied　in　recent　decades.　To　overcome　the　challenge　of　orientation　controllability,　we　developed　a　feasible　and　efficient　method　for　manipulating　the　orientation　of　LIPSS　in　real　time.　Specifically,　we　used　orthogonally　polarized　and　equal-energy　femtosecond　laser　(50　fs,　800　mu)　double-pulse　trains　with　time　delay　about　1ps,　total　peak　laser　fluence　about　1.0　J/cm(2),　laser　repetition　frequency　at　100　Hz　and　scanning　speed　at　150　mu　m/s　to　manipulate　the　LIPSS　orientation　on　silicon　surfaces　perpendicular　to　the　scanning　direction,　regardless　of　the　scanning　paths.　The　underlying　mechanism　is　attributed　to　the　periodic　energy　deposition　along　the　direction　of　surface　plasmon　polaritons　(SPPs),　which　can　be　controlled　oriented　along　the　scanning　direction　in　orthogonally　polarized　femtosecond　laser　double-pulse　trains　surface　scan　processing.　An　application　of　structural　colors　presents　the　functionality　of　our　method.　(C)　2019　Optical　Society　of　America　under　the　terms　of　the　OSA　Open　Access　Publishing　Agreement