Lumbar shaking may be caused by lumbar disc herniation, hypocalcemia and so on. 1. Lumbar disc herniation: Lumbar disc herniation is considered to be caused by disc degeneration, heredity and lumbar spine injury. Patients will show lumbar pain, scoliosis, reduced lumbar spine activity, etc. Some patients will have the symptom of lumbar shaking when they move their waist. 2. Hypocalcemia: Hypocalcemia may be caused by vitamin D deficiency and hypoparathyroidism. The patient will have back and leg muscle spasms, hand and foot twitching, and so on, and thus the patient will have a shaky waist. It is recommended that patients need to consult a doctor in a timely manner to determine the cause of the disease, and the doctor will choose targeted measures according to the cause of the disease.