2nd International Conference on Knowledge Management, Blockchain and Economics by the Iranian Knowledge Management Association, Ministry of Communications and Information Technology, Malek Ashtar University of Technology and Vice President for Science and Technology on February 23, 2021 in Tehran with the aim of creating a suitable environment for interaction, exchange and Transferring experiences and presenting the achievements of researchers in this field, expanding and expanding the space for interaction between different strategic and operational levels, providing the ground for scientific and applied research in this field, presenting new topics and new standards, introducing and reflecting research results. , Research, Experiences and Innovations in Science Universities and achieving sustainable development will be held in collaboration with professors from prestigious universities across the country and activists, students, researchers, thinkers from all research centers and other management organizations. We would like to inform you that this conference has been registered and indexed by the Ministry of Science, Research and Technology with the code 8124647 and the Islamic World Science Citation Database (ISC) with the code 55305-98190 and all articles accepted in this conference will benefit from the above score. Therefore, all articles presented in these conferences have scientific points.