Jet　pumps　are　widely　used　in　thermoacoustic　Stirling　heat　engines　and　pulse　tube　cryocoolers　to　restrain　acoustic　streaming　and　improve　the　system　performance.　In　this　paper,　a　regression　model　is　presented　to　predict　the　acoustic　streaming　in　a　thermoacoustic　Stirling　heat　engine　(TASHE)　with　different　structure　parameters　of　the　jet　pump.　These　parameters　include　position,　length,　inner　diameter　and　tapered　angle.　Response　surface　methodology　(RSM)　is　used　to　study　the　relatiohship　between　structure　parameters　of　jet　pump　and　acoustic　streaming.　A　regression　model　is　developed　to　predict　the　acoustic　streaming.　The　analysis　of　variance　(ANOVA)　is　conducted　to　describe　the　rationality　of　regression　model　and　examine　the　statistical　significance　of　factors.　In　addition,　the　relationship　between　acoustic　streaming　and　Structure　parameters　of　jet　pump　Is　presented　using　2D　contour　and　3D　surface　plot.　It　reveals　that　small　position,　length,　tapered　angle　and　large　inner　diameter　can　help　suppress　acoustic　streaming.　Eventually,　four　random　confirmation　tests　are　performed　to　verify　that　the　regression　model　can　predict　acoustic　streaming　reasonably.　This　work　provides　theoretical　guidance　for　controlling　acoustic　streaming　using　jet　pump.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.