Can not bend the waist, a bend in the waist pain, may be due to lumbar strain, lumbar disc herniation, lumbar spine osteophytes and other diseases. 1. Lumbar strain: lumbar strain may be caused by long-term posture, lumbar over-exertion, or lumbar cold leading to aseptic inflammation, resulting in the inability to bend over and pain when bending over. 2. Lumbar intervertebral disc herniation: this disease may be due to the accumulation of lumbar chronic injury, or due to the lumbar degeneration caused by long-term compression of the nerve root, in the bending of this compression may be aggravated, so that can not bend down a bend pain in the situation. 3. Lumbar vertebral osteophytes: lumbar vertebral osteophytes are generally due to cartilage damage, which may lead to the bone edge of the bone growth, so that the intervertebral foramen become smaller and other conditions compressed to the nerve root, can not bend over when bending over, pain, sciatica, neck pain, and other symptoms may occur. Can’t bend down a bend pain, may also be other causes, such as lumbar spondylolisthesis, lumbar spinal deformity, etc., it is recommended to go to the hospital in time, to clarify the cause of the disease, and active treatment.