The embodiment is coupled to the transfer member, a driving means including a movement block that moves forward or backward along the longitudinal direction by rotation of the transfer member, and is connected to the movement block, and supports forward of the user's foot and tibia. A support frame including a member and a rear support member which rotates with the front support member and supports the user's thigh, wherein the front support member is connected to the front support member and the front support member It is inserted into the member and includes a front length adjusting part for adjusting the length of the front support member and a fixing screw part for fixing the adjusted length, and the fixing screw part is formed in an area where the front supporting member and the front length adjusting part are connected. It includes, a protrusion protruding in the vertical direction from the longitudinal direction of the front supporting member, inserted into the protrusion, and includes a replaceable first nut and a fixing screw formed to male and female engage with a thread formed on an inner surface of the first nut It provides a recovery exercise device characterized in that. Therefore, a protruding thread portion for coupling with the fixing screw is formed at a portion where the bar-shaped member and the fixing screw engage, and a replaceable nut is included inside the screw portion, so that when the thread is worn out, the replaceable nut The bay can be removed and replaced. Therefore, each member of the bar-shaped member itself is not replaced, so it can be economically and easily repaired and used continuously.실시예는 이송 부재와 결합하여 상기 이송 부재의 회전에 의해 길이 방향을 따라 전진 또는 후진 이동하는 이동 블록을 포함하는 구동 수단, 및 상기 이동 블록과 연결되며, 사용자의 발과 경골부를 지지하는 전방 지지 부재 및 상기 전방 지지 부재와 회동하며 상기 사용자의 대퇴부를 지지하는 후방 지지 부재를 포함하는 지지 프레임을 포함하며, 상기 전방 지지 부재는 상기 후방 지지 부재와 연결되어 있는 전방 주지지부재와 상기 전방 주지지부재 내로 삽입되어 상기 전방 지지 부재의 길이를 조절하는 전방 길이 조절부 및 조절된 길이를 고정하는 고정 나사부를 포함하고, 상기 고정 나사부는 상기 전방 주지지부재와 상기 전방 길이조절
