Imbalanced SRB in China has grown continuously over the past 30 years, from 107.6 male live births per 100 females in 1982 to 120.5 in 2005, with a slight drop in 2010 to 117.948 . The SRB in rural areas is significantly higher than that in urban areas. In rural areas, SRB reached 122.9 in 2005 and 122.19 in 2010. SRB is also rising rapidly in urban areas from 109.9 in 1990 to 117.1 in 2005 and even to 120.210 in 2010.