A kind of safe needle cover structure of injection tube,It includes a needle cover ontology,The needle cover this system is hollow to have an accommodating space,And the opening of one end connection accommodating space,Set at offer injection tube syringe needle, which covers, to be installed with,And the opening side of accommodating space is communicated along needle cover body outer wall equipped with a profile groove,Open circumferential without having profile groove is then equipped with block convex parapet,Block convex parapet separately extends to form the guide port of flaring shape with respect to the two sidewalls of profile groove again,Guide port can be penetrated accurately and safely import profile groove by providing needle end,And then it is placed in the cover state that needle cover ontology is completed in accommodating space,Needle cover ontology upper shield efficiency is promoted,Have both the safety person of upper shield process一種注射筒之安全針蓋結構，其包含一針蓋本體，該針蓋本體係中空具有一容置空間，以及一端部連通容置空間之開口，提供注射筒針頭處的套覆容設，且容置空間之開口一側沿著針蓋本體外壁相通設有一剖槽，而不具剖槽之開口周邊則環設有擋止凸垣，又擋止凸垣相對剖槽之兩側壁另延伸形成漸擴狀之導引口，提供針頭端能透過導引口準確且安全地導入剖槽，進而置入容置空間內完成針蓋本體之罩蓋狀態，提升針蓋本體套蓋效率，兼具套蓋過程之安全性者
