Since 1980' s, sex ratio at birth in Hunan Province has been elevated continually, and the disparity of area, city and countryside, child times has been enlarged. There are society, historical, family and realistic reasons. We think the comprehensive govermnent of sex ratio at birth is urgent. After analyzing present situation sex ratio at birth in the Hunan Province, this article points out that under the principle of comprehensive government we can invent the electronic eyes to control sex appraisal of the ultrasound...