The　horizontally　oriented　jet　flame　induced　by　rectangular　source　impinging　upon　the　opposite　wall　is　actually　common　in　the　chemical　industry,　but　the　related　studies　are　limited.　In　this　paper,　the　computational　fluid　dynamics　codes　are　carried　out　to　investigate　the　temperature　profile　in　thermal　impinging　flow　of　the　horizontally　oriented　methane　jet　flame　with　rectangular　source,　which　the　rectangular　orifice　is　400　mm(2)　with　three　different　aspect　ratios　(L/W　=　1,　2,　4);　besides,　the　jet　velocities　vary　from　27.5　m/s　to　125　m/s.　As　the　horizontally　oriented　methane　jet　flame　impinges　on　the　vertical　plate　in　front　of　the　fuel　orifice　directly,　the　vertical　temperature　along　the　opposite　plate　is　focused　on.　Results　show　that　the　temperature　near　the　impingement　point　is　the　same　for　different　jet　velocities,　but　the　temperature　along　the　vertical　direction　is　larger　with　increasing　fuel　jet　velocity.　Moreover,　the　orifice　aspect　ratio　has　a　significant　effect　on　the　temperature,　which　increases　with　the　aspect　ratio　at　a　given　position　for　the　momentum-controlled　flame.　The　effective　heat　release　rate　on　the　basis　of　unburned　fuel　and　ellipse　flame　shape　hypothesis　is　put　forward　to　correlate　the　temperature　profile.　Finally,　a　new　correlation　to　illustrate　the　vertical　temperature　rising　along　the　opposite　plate　is　proposed　in　light　of　the　orifice　aspect　ratio　and　fuel　jet　velocity,　and　the　predictions　obtained　by　the　proposed　model　agree　well　with　the　numerical　results,　which　is　applicable　for　the　horizontally　oriented　flame　with　rectangular　source　impinging　upon　the　opposite　wall.