A　novel　integral　multi-jet　spout-fluidized　bed　(IMJSFB)　is　designed　so　as　to　reduce　the　dead　zone　at　the　bottom　of　the　annulus　and　omit　auxiliary　equipment　for　bypass　fluidizing　air.　The　gas–solid　flow　behavior　in　the　IMJSFB　was　numerically　simulated　using　an　Eulerian–Eulerian　two-fluid　model.　A　number　of　slits　(4)　were　formed　on　the　cone　side　of　the　cylindrical　spouted　bed　to　form　an　auxiliary　multi-jet　structure,　which　can　create　spoiler　effects　on　the　boundary　of　the　pyramidal.　The　distributions　of　particle　velocity　and　concentration　in　the　IMJSFB　were　obtained　by　numerical　simulation.　The　CFD　results　show　that,　compared　with　the　conventional　spouted　beds,　the　IMJSFB　structure　can　effectively　enhance　the　particle’s　velocity　in　the　annulus　of　the　spouted　bed　(especially　in　destroying　flow　dead　zone　at　the　annulus).　The　enhanced　particle　motion　significantly　decreases　the　volume　fraction　of　the　boundary　layer　on　the　cone.　The　particle　concentration　and　velocity　distribution　along　the　radial　direction　become　more　uniform,　and　the　decrease　in　value　of　the　coefficient　of　variation　(CV)　of　the　particles’　velocity　is　22.9%　in　IMJSFB.　The　turbulent　kinetic　energy　of　the　gas　phase　can　be　significantly　enhanced　and　the　strengthening　effect　on　the　turbulent　kinetic　energy　of　the　gas　remains　good　with　the　increase　of　the　bed　height.　©　2020,　Associação　Brasileira　de　Engenharia　Química.