This thesis relates to the problems of secularity and religion to Tunisia. The stake is to study these two concepts in a new ground : Tunisia. This study rises from independence until the revolution.In the first left, the thesis concentrates on the genesis of the concept of secularity, its originality and the specificity of the Tunisian policy. This part constitutes first cross between the political power and religious.In the second part, the thesis concentrates on the Tunisian society. It focuses hard tearing between the adhesion of the movement reformist forced by Bourguiba and the Islamism represented by the movement of the Islamic Tendency. This part will be an opportunity to explore new social space. A new social architecture will be drawn, between female warping and the blooming of the religiosity.In the last part, we are accentuated on the excitement of the contemporary Tunisian thought in front of the choice between appropriation and adaptation to the secularism. The initial question in this part is doubly ambiguous. how does the Islamic company lay out the questions which disturbs it? Religious freedom, apostasy, wine, testimony : concepts subjected to endless debates. How can we interpret the delay of the Muslim company? The studies of Charfi and Talbi give us some tracks of thought. A new feminine generation will be present in Tunisia. It will be time to discover how the female thought occupies it the cultural scene in Tunisia. This thesis tries to answer if secularity is the cause of the crisis of the Tunisian society or the solution.