Sometimes there are several reasons for hand numbness: 1, may be related to their cervical spine, if the cervical disc protrusion to the nerve vessels will appear this symptom, you can use a hot towel hot compress their hands to promote blood circulation, you can also use your fingers to gently massage their hands; 2, may be caused by hand cold, usually pay attention to hand warmth, avoid hand cold; 3, may be the lack of calcium in the body 3, may be caused by the lack of calcium elements in the body, pay attention to the body to supplement rich nutrition; 4, may be caused by their own overwork, usually pay attention to more rest, avoid overwork; 5, may be their sleep posture is incorrect, the symptoms of pressure on their hands; 6, may be the symptoms of stroke, stroke patients will also appear headache, dizziness symptoms, in order to be safe, you can go to a regular hospital to do a comprehensive To be safe, you can go to a regular hospital for a comprehensive examination.