Liking is a common activity in many of occupations and daily living, Lifting has been studied for many years. In this article, based on the existing literatures on lifting, mechanism of back support and proper posture during lifting are described. These mechanisms include the intra-abdominal pressure mechanism, the thoracolumbar fascia mechanism, and posterior ligamentous system. Proper posture for lifting are in the squat style, the lumbar spine is aligned in its normal lordosis and the pelvis is aligned in an anterior tilt. Keep the load close to the body and avoid twist white lifting.