This paper, taking Tianjin, Hebei, Shandong and Liaoning in Bohai rim as the studying cases, establishes an index system to evaluate urbanization and sea area carrying capacity, uses entropy to give the weights to urbanization and sea area carrying capacity, employs coupling model and coupling coordination model to measure their coordination degree, and applies the differential coefficient to analyze its difference and evolution rules. Results show the coupling degree of urbanization and sea area carrying capacity of the four statedabove provinces in Bohai rim is over 085, and coupling coordination degree is over 045, both higher and stable in Tianjin and Liaoning, lower and largely fluctuated in Shandong and Hebei. Their differential coefficient is less than 001, indicating a minor regional difference. It is concluded that the urbanization and sea area carrying capacity is in a stably coordinated status. 

This paper, taking Chinas ocean as research target, establishes an evaluation index system of oceanic ecology loading capacity including three factors of society, economy and nature, applies improved ADAS model to calculate the comprehensive loading capacity of Chinas oceanic ecology system from 2007—2011 according to the balance between gross supply and gross demand, aiming at offering references for China to develop ocean resources and realize sustainable development. The comprehensive loading capacity of Chinas oceanic ecology is slightly rising from 2007 to 2011, climbing at peak in 2008. The loading level is at loadable, less than their loading capacity of Chinas oceanic ecology.