Provided is a connector that can reduce liquids such as infusions that stay in a cavity. The connector (1) is connected to the middle of the infusion pipeline and used for mixed injection. The disc-shaped connector body (2) is provided with: standing members (21a, 21b) with U-shaped grooves (23a, 23b) on the upper part, and standing members (22) with partition members (24, 25) on the upper part The flexible tower-shaped member (3) is provided with: an inverted U-shaped notch (31), which forms a flow path (36a, 36a, 23b) between the U-shaped grooves (23a, 23b) of the vertical member (21a, 21b) 36b), and forming a connecting space portion (37) of the connecting flow path (36a, 36b)； an inner wall portion (33) that forms a cavity portion (32) for accommodating the partition members (24, 25)； a mixing port (35) )； and the cover member (4), which fixes the flexible tower-shaped member (3) to the connector body (2), and is provided with: an inlet (43) connected to the flow path (36a)； an outlet ( 44), is connected to the flow path (36b).提供一種連接器，其能夠減少滯留於空洞部之輸液等液體。連接器(1)，係連接於輸液管線的中途並用以進行混注。圓盤狀的連接器本體(2)，係具備：於上部具備U字溝部(23a、23b)的豎立構件(21a、21b)、於上部具備分隔構件(24、25)的豎立構件(22)；可撓性塔狀構件(3)，係具備：倒U字狀缺口部(31)，係在豎立構件(21a、21b)的U字溝部(23a、23b)之間形成流路(36a、36b)，並且，形成連接流路(36a、36b)的連接空間部(37)；內壁部(33)，係形成收容分隔構件(24、25)的空洞部(32)；混注口(35)；以及罩構件(4)，係將可撓性塔狀構件(3)固定於連接器本體(2)，並具備：流入口(43)，係連通至流路(36a)；流出口(44)，係連通至流路(36b)。
