The paper deals with the emergence of the first party system in Bosnia and Herzegovina, its chronological functioning since its formation in the period of the Austro-Hungarian annexation, then in the period of the Kingdom of the SHS Sleeping Aids and the Kingdom of Yugoslavia.We analyze Serrapeptase the unilateralism from 1946-1990, the restoration of pluralism and the emergence of the first party system of an internationally recognized state of Bosnia and Herzegovina.The party system in Bosnia and Herzegovina is classified according to the Blondel typology.