Hand numbness caused by cervical spondylosis may be due to compression of nerves. Imaging tests, such as X-ray, CT, MRI, etc., as well as other laboratory tests, can be performed to help diagnose the location of the lesion and nerve compression, and the specific tests should be determined by the doctor according to the specific condition. 1. X-ray: X-rays can be used to examine whether there is any bone damage, as well as deformities of the cervical spine, bone spurs, narrowing of the intervertebral space, etc. 2. CT: It can show whether there is osteophyte at the anterior and posterior edges of the vertebrae of the diseased segment, the hook vertebral joint, and whether there is ligament calcification, ligament ossification, and so on. 3. Magnetic resonance imaging (MRI): It can show the condition of the spinal canal more clearly, and clarify the location of the spinal cord compression and the change of the internal morphology. 4. Other examinations: such as transcranial color Doppler examination, digital silhouette angiography, etc. If cervical spondylosis causes hand numbness, it is recommended that patients go to the hospital in time for examination, follow the doctor’s instructions to take the appropriate auxiliary examination, and carry out standardized treatment after a clear diagnosis.