for human interactions and especially a platform for legal interactions, including legal actions and events. In the interactions of the real and physical world, people try to prove their Claims in cases of disputes and legal actions by preparing paper documents in transactions and legal relations with each other. The physical nature of these documents has made it easier to create and protect them. In the cyber space, people must prepare documents and maintain these documents to prove their rights. Considering the fact that Iran's evidence system is a legal evidence system, the evidence presented by the parties must have legal conditions, at the same time, these documents and evidence are subject to change every day due to the dynamics and evolution of the cyberspace, the challenges The acceptance of these evidences in the legal system of our country is a matter of debate. This article is written in a descriptive and analytical way and according to the provisions of the commercial law and the definition of the document in the civil law, in terms of the legal divisions of the evidence in this space, it can be classified as deed under private seal, secure electronic documents and documents in the form of a official document. there are also challenges such as theexpensiveness of searching for these evidences, attribution of documents, determination of the governing law among these challeng.