PROBLEM TO BE SOLVED: To provide a syringe connector capable of preventing a sealing member arranged in a container from being pierced by a needle tube earlier than a sealing member arranged in a syringe. SOLUTION: A syringe connector 200 is a connector capable of connecting a container 410, 420, which holds a drug and whose inside is maintained under negative pressure, and a syringe 310, 320, and is a main body that can be attached to each container. It has a portion 201 and hollow needle portions 230 and 240 held by the main body portion, and each needle portion projects toward one end side of the main body portion, and seal members 412 and 422 arranged in each container. The first puncture portions 231 and 241 capable of puncturing the syringe, and the second puncture portions 232 and 242 capable of puncturing the sealing members 312 and 322 arranged on each syringe so as to project toward the other end side of the main body portion. The magnitude of the resistance value when the first puncture portion pierces the seal member of the container is larger than the magnitude of the resistance value when the second puncture portion pierces the seal member of the syringe. It is characterized in that it is configured to be. [Selection diagram] FIG. 8【課題】シリンジに配置されたシール部材よりも容器に配置されたシール部材が針管によって先に刺通されてしまうことを防止し得るシリンジ接続具を提供する。【解決手段】シリンジ接続具２００は、薬剤を保持するとともに内部が陰圧に維持された容器４１０、４２０とシリンジ３１０、３２０とを接続可能な接続具であって、各容器に取り付け可能な本体部２０１と、本体部に保持された中空状の針部２３０、２４０と、を有し、各針部は、本体部の一端側へ向けて突出し、各容器に配置されたシール部材４１２、４２２を刺通可能な第１穿刺部２３１、２４１と、本体部の他端側へ向けて突出し、各シリンジに配置されたシール部材３１２、３２２を刺通可能な第２穿刺部２３２、２４２と、を有しており、第１穿刺部が容器のシール部材を刺通する際の抵抗値の大きさが、第２穿刺部がシリンジのシール部材を刺通する際の抵抗値の大きさよりも大きくなるように構成されてなる、ことを特徴とする。【選択図】図８
