Getting up in the morning and feeling numbness under the feet may be related to physiological factors, may also be due to insufficient cerebral blood supply or cervical spondylosis and other reasons. 1. Physiological factors: at night when sleeping due to long time to keep improper sleeping posture, resulting in local nerve compression, resulting in local blood circulation is not good, may cause up in the morning under the feet feel numb, and is not accompanied by any other discomfort performance, through the get up after the appropriate activities, can make the symptoms quickly disappear, without special intervention. 2. Insufficient cerebral blood supply: especially in people with hypertension, hyperlipidemia, cerebral atherosclerosis and other underlying diseases, which can lead to narrowing of cerebral blood vessels, resulting in cerebral ischemia, hypoxia, especially during sleep, which can cause slow blood flow and aggravate cerebral ischemia, hypoxia, which makes them easy to get up and feel numbness under their feet, and can be accompanied by dizziness, headache and other symptoms. 3. Cervical spondylosis: especially the existence of cervical disc herniation patients, in the evening when sleeping due to pillow inappropriate or long time sleeping posture, easy to lead to local nerve root compression, may cause the feet feel numb in the morning, but also accompanied by the feet of cotton feeling, dizziness and other symptoms. Getting up in the morning and feeling numb feet, may also be caused by other reasons, if the symptoms continue to get better, you should go to the hospital as soon as possible, after diagnosis of the cause, the doctor guided by the treatment.