In　order　to　obtain　local　fluidization　at　particle　accumulation　layer　in　the　annulus　region　of　spouted　beds,　circular　orifice　side-jets　were　opened　on　the　cone　side　of　the　spouted　bed,　which　were　regularly　distributed　in　three-dimensional　space.　A　three　dimensional　multi-jet　spout-fluidized　bed　structure　was　numerically　simulated　using　two-fluid　model　(TFM)　incorporating　the　kinetic　theory　of　granular　flow.　The　distribution　of　particle　volume　fraction,　particle　velocity　and　uniformity　of　flow　field　in　spouted　bed　was　obtained　by　CFD,　and　the　simulation　results　were　compared　with　a　conventional　spouted　bed.　Key　parameters　such　as　the　diameter　of　side-jets　was　optimized　and　analyzed.　The　results　show　that　compared　with　simulation　results　in　conventional　spouted　beds,　the　integral　multi-jet　spout-fluidized　bed　structure　can　effectively　enhance　radial　mixing　of　particles　in　annulus　and　spout　zones　of　spouted　beds,　especially　fluidize　particles　in　the　flow　dead　zone　at　the　bottom　of　annulus.　The　value　of　particle　flow　field　uniformity　increases　with　the　increase　of　bed　height,　which　indicates　that　the　uniformity　effect　of　Multi-Jets　on　particle　flow　field　is　mainly　reflected　in　the　conical　zone　of　spouted　beds.　The　best　effect　of　side-jets　on　particle　fluidization　in　spout-fluidized　beds　is　obtained　at　Ai/Az=0.67.　©　2019,　Editorial　Board　of　＇Journal　of　Chemical　Engineering　of　Chinese　Universities＇.　All　right　reserved.