Problem to be solved: to provide a medical connector and an infusion set capable of inhibiting removal of the elastic valve body from the housing.The medical connector 1 of the present invention is provided with a housing for partitioning an insertion opening into which a male connector can be inserted, and an elastic valve body 20 having a top surface 21 and a bottom surface 22 opposite to the top surface so as to close the insertion opening The housing has a holding portion 70 for holding the elastic valve body 20 in contact with the top face 21 and the bottom surface 22 of the elastic valve body 20 and holding the elastic valve body 20, and the elastic valve body 20 is held by the holding portion 30 to be held by the holding portion HoldingThe peripheral portion 40 is located radially outside the portion 30, and the central portion 50 positioned inside the diameter direction of the holding portion 30 and having a slit 23 is formed, and the peripheral portion 40 is made of a core member 41 having a hardness higher than the central part It is characterized by including.Diagram【課題】弾性弁体がハウジングから脱離することを抑制可能な医療用コネクタ及び輸液セットを提供する。【解決手段】本発明の医療用コネクタ1は、オスコネクタを挿入可能な挿入開口を区画するハウジングと、前記挿入開口を閉鎖するように配置され、天面21及び当該天面の反対側の底面22を有する弾性弁体20と、を備え、前記ハウジングが、前記弾性弁体20の前記天面21及び前記底面22に接触して、前記弾性弁体20を挟持する挟持部70を有し、前記弾性弁体20が、前記挟持部70により挟持される被挟持部30と、当該被挟持部30よりも径方向の外側に位置する周縁部40と、当該被挟持部30よりも径方向の内側に位置し、スリット23が形成された中央部50と、を有し、前記周縁部40が、前記中央部50よりも硬度が高い芯部材41を含む、ことを特徴とする。【選択図】図3