With regard to globalization process which lies in front of developing countries, finding a trade commercial pattern for countries in the world trade with a suitable trade partners and those countries which don’t want to be left behind in the world trade, is a necessary and important task. In this study the trade pattern of intra industry and inter industry of Iran in the year 2003 has been investigated with the gravity model. The results show that Iran in the iron and iron alloys sector and non alcoholic beverages and tobacco is functioning with intra-industry and differentiated product pattern, a fact which shows the stability of intra industry pattern of Iran in the regional and global level in these sectors.