Numbness of the fingers in pregnancy may be caused by carpal tunnel syndrome, cervical spondylosis, poor blood circulation and so on. 1. Carpal tunnel syndrome: often due to pregnant women in sleep median nerve, by the fine edema of pregnancy tissue compression and thus caused by the phenomenon, will lead to numbness of the fingers, especially in the morning numbness is more obvious. 2. Cervical spondylosis: mainly pregnant women suffering from cervical spondylosis, resulting in spinal stenosis or herniated discs on the nerve root compression, thus causing numbness of the hands and feet and other symptoms. 3. Poor blood circulation: it may be because when sleeping during pregnancy, long-term compression of one side of the limbs, resulting in poor local blood circulation, thus causing numbness of the fingers. Numbness of the fingers during pregnancy may also be caused by other reasons, if recurring or persistently failed to alleviate, you should promptly go to the hospital to find out the cause.