Abstract: Lumbar extensor fatigue is one of the important factor affecting human movement. In this paper, we use the words “Lumbar Extensor Fatigue/Lumbar Muscles Fatigue” as topic retrieve literatures in the Pub Med and Web of Science database. The purpose is to analyze what kind of changes would occur about human movement biomechanical characteristics, and the physiological causes after lumbar extensor muscle fatigue. Result:Lumbar extensor fatigue have four aspects of influence on the human body movement, decline proprioception ability of the lumbar spine joints, influence the dynamic stability of the spine in human movement, change the lumbar—pelvis motion rhythm, and change the body strategy of keep human balance;Lumbar extensor fatigue caused the motor nerve function adjustment, led to multiple joints proprioception decrease and the muscles around these joints recruitment strategy was changed;These functions and structures change decline the efficiency of human body complete the target movement and rise the risk of sports injury. Current prevent lumbar extensor fatigue researches are so less that hard to provide beneficial theoretical support to prevent or alleviate lumbar extensor fatigue.