Sudden numbness of the hands and feet are mainly considered for two reasons: 1, brain problems, is the most common cause, such as the patient if there is a brain hemorrhage, brain tumor, cerebral infarction, there will be a sudden numbness of the hands and feet, unable to move the phenomenon. Such patients should actively perform cranial CT, cranial MRI examination, clear diagnosis, symptomatic treatment, the earlier the better. 2, cervical spine problems, especially cervical spondylosis is very serious, the spinal stenosis itself is very strong, slight external force, may suddenly numbness of the hands and feet can not move the patient. Such patients need to actively perform cervical spine CT and cervical spine MRI examination, clear diagnosis, and actively carry out symptomatic treatment.