When twisting the back, the spine produces a “click” sound, which can neither be described as good nor bad. When a normal person twists his waist, there is friction and impact between the synapses, especially the lower synapse of the upper vertebra and the upper synapse of the next vertebra. Therefore, when twisting the waist will cause the spine to have a “click” sound, this sound is not a pathological performance, but a physiological phenomenon. Therefore, the sound of the spine when twisting is not bad, nor is it a sign of disease, and can be treated as normal.