The Prosperous Justice Party is a unique and phenomenal party, it was born from the womb of a socio-religious movement called Jama'ahTarbiyah which later metamorphosed into an Islamic political party. The party's social base is an educated, young and middle class Muslim group. This dissertation explores strategic of development the Prosperous Justice Party in Kebumen District 1999-2014 by describing the existence of PKS in the dynamics of Indonesian Islamic politics. This research reveals the unique phenomenon of Kebumen PKS's involvement in the electoral role in the distribution of votes and the seats of members of the Kebumen Regency Regional Representative Council. Approach method uses phenomenological study because the phenomenon (phenomenon) studied is a dynamic social political phenomenon. The results of this study are that the birth of PKS can be accepted and exist in the community in Kebumen Regency because PKS approaches the community through collective actions such as; social services, relief from natural disasters, distributing financial loan funds, building school buildings, and places of worship.