Despite passing a long time from entering the term "civil society" into political debates, due to special reasons, discussion about this term has become more common at the end of 20th century. On the other hand, knowing that our society is an Islamic one and in I.R.I constitution has been asserted that all laws and regulations must be based onIslamic criteria, therefore studying the relationship between civil society and religion has special importance. So in this article after defining civil society and Islamic society and declaring the relationship between the two, we will analyze the civil society in the context of the I.R.I constitution. The preliminary hypothesis is harmony, if we pay serious attention to the principles that investigated the relationship between people and the government.