This creation is a kind of related safe needle sleeve of butterfly needle of what,System on the outside of fitting what one butterfly needle,The safe needle sleeve includes a first clamping piece and one of is correspondingly connected with second intermediate plate jointly with the first clamping piece,The second intermediate plate end sets out an arc turn of bilge toward first clamping piece extension is curved,An at least baffle is horizontally set in the arc turn of bilge,This first,The periphery of second intermediate plate be equipped with correspond to each other and be capable of fixing this first,The clamping part of the connection status of second intermediate plate； Accordingly,Butterfly needle can be pulled in Hou in safe needle sleeve,The syringe needle baffle block of butterfly needle is limited,And butterfly needle is enabled to be closed in safe needle sleeve really,User is avoided to be stabbed by syringe needle,Ensure that butterfly needle uses the safety of Hou.本創作係有關於一種蝴蝶針之安全針套，係用以套合於一蝴蝶針外側，該安全針套包括有一第一夾片以及與該第一夾片共同對應連接之一第二夾片，該第二夾片末端往該第一夾片延伸彎設出一弧彎部，該弧彎部內橫設至少一擋片，該第一、第二夾片的周緣設有彼此對應且能固定該第一、第二夾片之連接狀態的卡設部；據此，能將蝴蝶針拉入安全針套內後，使蝴蝶針的針頭為擋片擋止限位，而令蝴蝶針確實被封閉在安全針套內，避免使用者被針頭扎傷，確保蝴蝶針使用後的安全性。
