Abstract: The stability of political systems needs a political institution which can keep long-term validity and the validity of political institutions directly relates to the stability of a political system.The validity of our country s political institutions does not only contain the intrinsic validity,but also includes the external validity.The intrinsic validity of political institutions is the intrinsic beginning and the basic demand of our country s political stability and the external validity of political ins...

Key words: politicalinstitution, politicalstability