Abstarct: Today, cryptocurrencies, promoting their use and supporting them, has created a huge evolution in virtual business tools and e-commerce. Targeted and baxsed on the determination of a number of expert criteria, among the managers and expert experts of small and medium business units involved in international activities, the data required to analyze the research questions have been selected with the help of a standard questionnaire related to Fuzzy and best-worst fuzzy Delphi methods should be collected. Also, baxsed on the best-worst fuzzy method, three key and important factors in the field of acceptance and development of Bitcoin-baxsed business exchanges in the international trade of small and medium-sized companies in Iran include operational risks, expected advantages, respectively. It is about the use of Bitcoin and the company's attitude towards Bitcoin. baxsed on the results, the acceptance and use of Bitcoin is greatly influenced by the expectations and perceptions of small and medium businesses in the field of risks and advantages of using this cryptocurrency.