Sleeping at night with numb hands is often a nerve compression, there are two common nerves, one is the median nerve, the other is the ulnar nerve, as follows: a. Median nerve compression often occurs in the wrist area, will cause numbness in the thumb index finger, middle finger, shaking hands can relieve the numbness. Do electromyography to determine that the nerve is compressed at the carpal tunnel, determine the diagnosis after the nerve treatment, including intramuscular injection of adenosine cobalamin, the effect is not good enough for surgery to decompress the carpal tunnel, basically can relieve the problem of hand numbness. Second, ulnar nerve compression occurs at the site behind the elbow joint, which can cause numbness in the little finger and ring finger, and sometimes also cause a decrease in fine hand movements. A snap at the back of the elbow joint will have radiating pain like that of the little finger, and frequent wristing of the elbow joint will cause an increase in numbness. Therefore sleeping numbness wake up often due to the elbow joint bending position for too long, you can straighten the elbow joint, the numbness will gradually reduce.