The present invention is to provide a medical agent injection filtering device with enhanced durability and stability. The medical agent injection filtering device includes: a filter accommodation member which has a through-hole to pass an injection solution and can be joined to and separated from an injection unit of a syringe or a medical three way valve and a filter which is inserted in the filter accommodation member and is formed by sintering and molding a resin material. A snagging protrusion, which covers and supports an edge of at least one side of the filter, is formed to protrude from the inside in the filter accommodation member.COPYRIGHT KIPO 2016주사액이 통과되는 관통공을 가지며 주사기의 주입부 또는 의료용 삼방밸브에 결합 및 분리 가능한 필터 수용부재와, 필터수용부재 내부에 삽입되어 장착되며 수지 재질로 소결성형된 필터를 포함하고, 필터 수용부재의 내부에는 필터의 적어도 일면 테두리를 감싸서 지지하는 걸림턱이 내면으로부터 돌출되게 형성되는 것을 특징으로 하는 의료용 약물주입 여과기가 게시된다.
