There are two kinds of architecture for the Satellite Network （SN）： On-Board Processing （OBP） and Bent-Pipe （BP）. Although OBP has been attracted more attention in the research area due to its performance advantage, BP is still used by some of the satellite systems for its low system cost. It is obvious that the incompatibility between BP systems may cause resource waste and thus sharing resource can help to cut down the system cost further. Therefore, a general SN routing method Area Routing （AR） is proposed. AR can provide not only shared source for different SN system but also network access for sky flying satellites. In this paper, the connection of the satellites is discussed, and the concept of connection analysis is introduced. By using the connection analysis and simulation tool, the best configuration of satellite connection for both coverage and accessibility is demonstrated.