Disclosed is a multi-axis artificial knee joint which is to enable a prosthetic leg wearer to safely and naturally walk during the whole process of a walking cycle. According to an embodiment of the present invention, the multi-axis artificial knee joint for connecting an amputated lower limb and a prosthetic leg includes: a joint upper member formed to be fixed to the amputated lower limb； a joint lower member formed to be fixed to the prosthetic leg； a main body unit connected to the joint′s upper member to rotate around a first axis, wherein the main body unit includes a first braking surface formed on one side； a rotation braking unit including a second braking surface corresponding to the first braking surface and formed on one side, wherein the rotation braking unit is connected to the main body unit to rotate around a second axis positioned on the lower side of the first braking surface； a first link member wherein one end is connected to the rotation braking unit to rotate around a third axis positioned on the rear of the second axis and the rear of the first braking surface and the other end is connected to the joint′s lower member to rotate around a fourth axis； and a second link member wherein one end is connected to the main body unit to rotate around a fifth axis positioned on the rear of the third axis and the other end is connected to the joint′s lower member to rotate around a sixth axis positioned on the rear of the fourth axis. When the rotation braking unit rotates around the second axis in a direction in which the knee is spread, the second braking surface presses the first braking surface in the direction in which the knee is spread.다축 인공무릎관절을 개시한다.본 발명의 일 실시예에 의하면, 절단하지 및 의족을 연결하기 위한 다축 인공무릎관절에 있어서, 절단하지에 고정 가능하도록 구성된 관절상측부재； 의족에 고정 가능하도록 구성된 관절하측부재； 일면에 형성된 제1제동면을 포함하는 본체부로서, 제1축을 중심으로 관절상측부재와 회전 가능하게 연결되는 본체부； 일면에 형성되며 제1제동면과 대향하여 배치되는 제2제동면을 포함하는 회전 제동부로서, 제1제동면의 하측에 위치하는 제2축을 중심으로 본체부와 회전 가능하게 연결되는 회전 제동부； 제2축의 후방 및 제1제동면의 후방에 위치하는 제3축을 중
