Turning the waist will click the common causes of physiological reasons, lumbar muscle strain, lumbar spine joint degenerative changes. 1. Physiological reasons: turn the waist due to the lumbar muscles, ligaments and bones produce friction and extrusion, occasionally issued by the popping sound is a normal physiological phenomenon, generally occurring in the sudden turn of the waist. This kind of physiological causes of popping generally does not occur frequently. 2. Lumbar muscle strain: If lumbar muscle strain causes stiffness of the lumbar muscles, accompanied by myofascial hyperplasia and other conditions, the friction of the joint surfaces during the twisting process may lead to popping. 3. Degenerative changes in the lumbar joints: degenerative changes in the lumbar joints caused by lumbar disc herniation, lumbar spine small joint disorders, etc., will be in the waist when the popping sound, and lumbar spine activities, pain and other manifestations of restriction. Turning the waist will click if frequent occurrence or at the same time accompanied by other discomforts, should promptly go to the hospital, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.