The present invention relates to a computer posture corrector. The computer posture corrector includes a fixing device capable of correcting depending on the thickness of a monitor and an infrared sensor. The present invention can protect the eyesight by attaching Figure 1 to the bottom of a monitor when using a computer. To stop using, press 20.COPYRIGHT KIPO 2017본 발명푼은 컴퓨터 사용시 도1을 모니터 하단에 장착 시키면 시력보호를 할 수 있다. 사용을 정지시키려면 20을 누른다.