Abstract
The research aims to clarify the course of the legislator, in the Constitution of the Republic of Iraq for the year 2005 in force and the legislations against him in determining the status of Islam from the legal system and to indicate its effect on the provisions of the legislation in that he categorically prohibited the enactment of any legislation that contradicts the constants of Islam, It has a history of execution when applying these texts and implementing their provisions.In addition, aims to prove the cancellation of the provisions of the Constitution by the text of the Constitution because of contradiction and does not contradict these provisions with the constants of Islam, which made the constitutional street measure by which the invalidity of the legal text or validity depending on the compatibility of this text with it or release it.