PROBLEM TO BE SOLVED: To provide a connector capable of reducing liquid such as infusion solution accumulated in a cavity. SOLUTION: A connector 1 is connected in the middle of an infusion line and used for mixed injection. A connector body 2 including an inflow port 21, an outflow port 22, a connection space part 23 connecting the inflow port 21 and the outflow port 22, a cavity part 31 inside, and a mixed injection port 32 on the bottom surface. A bottom cylindrical member 3, a cover member 4 for fixing the bottomed cylindrical member 3 to the connector body 1, and a partition member that is erected on the connection space 23 and divides the connection space 23 into an upstream side and a downstream side. And 25. [Selection diagram]【課題】空洞部に滞留する輸液等の液体を低減することができるコネクタを提供する。【解決手段】コネクタ１は輸液ラインの途中に接続されて混注に用いられる。流入口２１と、流出口２２と、流入口２１、流出口２２を接続する接続空間部２３とを備えるコネクタ本体２と、内部に空洞部３１を備え、底面に混注口３２を備える倒立した有底筒状部材３と、有底筒状部材３をコネクタ本体１に固定するカバー部材４と、接続空間部２３に立設されて接続空間部２３を上流側と下流側とに区画する仕切り部材２５とを備える。【選択図】 図２
