The rattling sound of neck rotation is usually a symptom caused by the disorder of the small joints of the cervical spine, sometimes accompanied by pain in the neck muscles, or a sore, swollen, uncomfortable feeling, more or less accompanied by fasciitis in the back of the neck, common in people who work at a desk or have cervical spondylosis. If this symptom occurs, you should change your habits, do more neck exercises, do cervical spine health exercises every day, or use anti-inflammatory and pain-relieving drugs to control the symptoms. If the symptoms worsen, accompanied by dizziness, nausea or numbness in both upper limbs, it is time to go to the hospital for serious examination and find a specialist to check whether there is nerve compression, cervical spinal stenosis or other problems.