The cause of numbness in the fingers of patients is first considered to be caused by cervical spondylosis, because neurogenic cervical spondylosis causes nerve root compression, so patients will experience numbness in the fingers. Of course, some patients should also consider that it is caused by brain diseases, such as patients with lacunar cerebral infarction will have numbness in their fingers. Other factors should also be taken into account, such as the possibility of numbness in cold environments and peripheral neuritis, patients will also experience numbness in the fingers. Therefore, patients with numbness in the upper extremities should first be examined to determine the cause of the numbness in the fingers, such as giving the patient an MRI of the cervical spine, an imaging examination of the brain, and other relevant neurological examinations when necessary.