The concept of Islamic economic system is still in the developing process, which has no final formula is agreed by Muslem group until now. This system existence has become the subject of debate, since the problems are still under Islamic consideration. The Islamic economy ideal is for creating peace, fair, prosperous and welfare social economic lives, materially and spiritually. Economic justice in Islam is different from liberalism concept, that there is justness if everything has been held through the marketing price mechanism, and based on the rule of the game, it’s the same as social economic concept. According to Islam, justness is based on the similarity of human being position in front of Allah, in obtaining the lofty position beside Him.

Key Words : Islamic Economic System, Islamic Concept, Socialism Concept, Liberalism Concept