Scholars believe that the practical method of swearing is the reflection of ancient custom of ordalie which it has been used to proving the right between claimant and defendant. This kind of exams in Iran and the ancient world are named: var; ilunaru; diviya; ordalie and etc. oath was named in several titles and methods in Elam, as well. it can be seen in Elamite tablets as legal treaties. But the evolution process of this subject and the assessment of the Elamites loyalty to their swearing or the punishment of abjuration for them are still hidden. While according to the oaths of this era, can be found symbols, beliefs and moral, religious, political and social values of elamite society and the causes of Strength and weaknesses of oaths and treaties can be realized. Therefore, concerning the thoughts and beliefs of the contemporary people of the Elamite civilization in the ancient Near East, the present study describes the origins, principales and dominance of the Elamite civilization firstly. Then will be answered to the what are the kinds and role of oath in different  social dimensions of the ancient Elam.it seems that oral and practical oaths in this eara were religious and legal at the beginning and gradually expanded into social, cultural and political domains.