The testimony of witnesses as one of the most important proofs of a lawsuit is effective in both court and arbitration cases. This article examines the acceptance of witness testimony and its process in cyberspace, as well as how intuition is Challenge in Iranian law and some legal systems. In this article, which has been done by descriptive-analytical method. The authors intend to discuss the Hearing the testimony of witnesses in cyberspace arbitration comparatively in US, European and Iranian arbitration systems. And in continuation of the legal and judicial validity of this method of hearing testimony, as well as how to denial witnesses, and finally the opportunities and challenges in the process of hearing witnesses in cyberspace arbitration should be examined.