PROBLEM TO BE SOLVED: To provide a syringe pump in which a liquid chemical can be prevented from firmly fixing to an element inside a body by preventing the liquid chemical and moisture from intruding from an opening of the body into the body.SOLUTION: A syringe pump 1 includes a body flange detection part 600, and the body flange detection part 600 includes: a moving member 601 which is projected to the side of a body flange pressing member 500 through an opening 650 of a housing part 8 and moves with the movement of the body flange pressing member 500 and a liquidtight member 610 for blocking intrusion of a liquid into the housing part 6 through the opening 650 of the housing part 8.COPYRIGHT: (C)2013,JPO&INPIT【課題】本体の開口部から本体内に薬液や水分が侵入するのを防止して薬液が本体内の要素に対して固着するのを阻止することができるシリンジポンプを提供する。【解決手段】シリンジポンプ1は、本体フランジ検出部600を備え、この本体フランジ検出部600は、収容部8の開口部650を通じて本体フランジ押さえ部材500側に突き出して本体フランジ押さえ部材500の移動に伴って移動する移動部材601と、収容部8の開口部650を通じて収容部6内に液体が侵入するのを阻止する液密部材610を有する。【選択図】図8