The CPL6 (the 6th version coupler developed by the National Center For Atmospheric Research), which is widespread in the Earth System Models (ESMs) of China, limits its development in the higher resolution. The new version CPL7 has a more higher parallel extensibility and can support much higher resolution configurations. The coupling theories of CPL7 were summarized through its couple with the Version 2 Grid-point Atmospheric Model of Institute of Atmospheric Physics, Chinese Academy of Sciences and the relevant experience was provided in the coupling of CPL7 with other components. In according with the development trend of ESMs, CPL7 is recognized to play an important role in the coupling improvement of the Earth System Models in China over the next few years.