The immediate goal for any small to medium-sized enterprise (SME) is to survive and maintain its independence. But, sooner or later, a small company will probably want to expand. With the trends towards global convergence and the adoption of outsourcing by firms of all sizes, growth usually means entering the international market. Meanwhile internet and e- commerce pose new challenges and provide new competitive opportunities for small and medium sized firms. The propose of this study is "To gain better understanding on impact of e-commerce on small and medium sized internationalization in Iran". It is done by comparison of existing literature and Iranian sample. The findings show that, Iranian SMEs use their websites as a brochure. Also the present research examined the influences of internet on export barriers and the findings show that internet may help Iranian SMEs in challenging with market risks.