Abstract : Due to its specificities, the family Small and Medium Enterprise shows a particular behavior as for the creation, development, sharing, protection and transmission of knowledge. The purpose of this paper is to study the specificities of the processes of knowledge creation and development in family firms. Three variables should influence the processes of knowledge development. The characteristics underlined by the literature as being specific to the small and medium-sized family firms are conservatism, independence orientation and social networking. We study particularly the influence of these characteristics on the development of the knowledge base in a context of internationalization.