Abstract: Symptoms of Islamic fundamentalism-including Hizbut-Tahrir Indonesia, here in after referred to HTI, primarily from the Middle East countries adapted Indonesian students who were studying there. In Indonesia, HTI began to appear and was introduced by Al-Baghdadi and Musthofa, since, 1982. This study analyzes HTI as a social movement which can be identified by three categories. Firstly, HTI is a specific movement, obsessed to apply Islamic law as a whole through the Khilafah state. Secondly, HTI is a radical movement that intends to implement the Islamic system in every facet of life. Thirdly, HTI is a movement that seeks to restore Islamic order as the center of world civilization. However, in reaching his goal was HTI does not use violent approaches.