Political party is one of the pillars of democracy that must exist in a modern state. The emergence of new political party appears based on Article 28 of The 1945 Constitution and Indonesia uses multiparty system. Besides, multiparty system has so many weaknesses and problems and it would take effect to the democratic consolidation in Indonesia. This research aims to evaluate the influence of simplification of the number of political party towards democratic consolidation in Indonesia. The type of this research is a normative legal research with conceptual and historical approach. In addition, by using a qualitative and descriptive method the research result shows the position and role of political party, the functions of political party, the problems of multiparty system, the influence of number of political party towards democratic consolidation in Indonesia and the problems on the effort of simplification of the number of political party. The result of research shows that the position of political party is important to strengthen the institutionalization degree in democratic political system. The role of political party becomes a liaison role between the process of government and citizens. The influence of number of political party towards democratic consolidation is crucial. There are two mechanisms to simplify the number of political party; (1) as the participants of election and (2) parliament way. The findings suggest to the government to improve the political party system and the coalition mechanism for simplification of the number of political party.