The　influences　of　wall　are　important　in　practical　combustion　devices.　In　present　study,　the　propagating　processes　of　near　wall　ignited　laminar　methane/hydrogen/air　flame　were　explored　under　different　hydrogen　fractions　in　a　constant　volume　combustion　vessel　mimicking　engine　geometry.　Results　showed　that　both　effects　of　heat　losses　and　wall　compression　cause　difference　of　local　flame　speed　at　different　directions.　The　flow　inside　burned　zone　induced　by　compression　accelerates　local　flame　speed　at　direction　opposing　to　the　wall,　makes　the　local　flame　speed　higher　than　freely　propagating　laminar　flame　speed.　Meanwhile,　flame　shape　changing　process　was　quantified　by　fitted　ellipses.　It　was　found　that　flame　shapes　are　strongly　affected　by　the　wall　compression　but　not　obviously　influenced　by　hydrogen　addition.　Hydrogen　addition　exacerbated　flame　instabilities,　notably　improved　the　local　and　global　flame　speeds　due　to　both　increase　of　laminar　flame　speed　and　flow　velocity　inside　burned　zone.　The　maximum　local　speed　increase　from　258　cm/s　for　20%　hydrogen　fraction　to　695　cm/s　for　80%　hydrogen　fraction.　Maximum　combustion　pressure　and　maximum　pressure　rise　rate　were　slightly　increased　by　hydrogen　addition.　On　contrary,　the　combustion　duration　notably　decreased　nearly　3　times　when　hydrogen　fraction　increased　from　20%　to　80%.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.