When the international insurance market is expected to change rapidly, the insurance barriers of some key countries in OECD have been studied. Many foreign insurers within the U.S. can enjoy national treatment in their market access, establishement and operations. but it can be viewed as an easy country to access and operate when we understand socio-cultural surroundings more deeply than their laws and regulations Japan, our neighbourhood is seeking the liberalization in the provision of international insurance services by the new insurance law in 1996. However, its main barriers are the official gazette and rules of the administrative authorities. EU, after the intergation, is running after the supervision of home country, to say nothing of the liberalization and the deregulation. The particular protectionist measure might be justified by the corresponding rationale.