Paroxysmal throbbing pain in the lower back may be caused by physiological factors such as long-term strain and cold stimulation, or it may be caused by pathological reasons such as diseases of the lumbar region and neighboring organs. 1. Physiological factors: long-term stooping labor, sedentary standing and other people will cause lumbar muscle fatigue injury, resulting in the emergence of lumbar fasciitis, fasciitis will lead to lumbar muscle edema, tension, spasm, paroxysmal lumbar throbbing pain. Long-term cold stimulation of the lumbar muscles will lead to vasoconstriction of the lumbar muscles and muscle stiffness, which may also occur. 2. Pathological causes: lumbar diseases may also lead to paroxysmal lumbar throbbing pain, such as lumbar disc herniation, lumbar spondylolisthesis, etc. These diseases will appear in the vertebral body osteophytes, lumbar muscle compensation, innervation of the region of the nerve conduction abnormality and so on, resulting in lumbar throbbing pain paroxysm. In addition, the lesions of the neighboring organs in the lumbar region can also lead to the manifestation of lumbar back throbbing pain, such as urinary stones, tubal inflammation and so on. Paroxysmal throbbing pain in the lower back may also have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.