The Transcaucasia region including three countries as Azerbaijan，Armenia and Georgia，the political situation in recent years is stable on the whole，countries on the road to transformation exhibit different characteristics. Azerbaijan formed a political structure with the president as the core of power. Armenia is the formation of the president as the center；the two parties from the parliament form a coalition government as the power structure. Georgia from the current general election started the implementation of semi presidential and semi parliamentary system，the parties share power within the framework of the constitution. Different countries have different understanding of the political transformation，and they are the main factors to choose different development modes. Among them the big countries around the geopolitical interests of the game，contention of the Caspian Sea oil and gas resources，crisis of Nagorno Karabakh and the issue of South Ossetia are all important factors affecting regional political pattern and foreign policy orientations. China has its own diplomatic interests in the Caucasus region.