China, as all we know, has been obsessed by High Sex Ratio at Birth (SRB) for years and the attention it attracted is getting much wider as time elapsed, from the academe to almost all the people.

• 摘要我国出生性别比偏高的问题近几年愈演愈烈，被广泛关注的范围已经从学术界扩大了整个社会。