ABSTRACT In the record of the theory, we found out that the competitive advantage always be focused on the thinking of strength, the strength aiming at ¡ugood¡v¡B¡ustrong¡vresources or conditions, whatever in the resource-based theory or the strategy-based theory. The reason is all research was deeply influenced by SWOT. Japanese Industry successfully growing up, ¡§with small to win huge¡¨, to beat global deader, had highlighted the important issue, ¡§ Shall small always be small? Shall big always be big? ¡§ Gray hamel and C.K. Prahalad in ¡uCompeting in the future¡vdeclared¡G ¡¨ Mastering industrial spaces is not by company¡¦s small or big, not by less or much resource, not by less or much market-share.¡¨ In case, it shall convince of us to study the factor of competitive advantage shall be in a vision more than ¡ustrength¡v, good , strong, or much resources and conditions. Meanwhile, in the record of theory, we also found out that the efficient method of resource & strategy must carefully consider the differentiation of product, industry and industrial structure. On fact, the differentiation of product, industry and industrial structure formed at each industry¡¦s differentiation and each industry¡¦s specificity. Concluding all of above, the writer is interested in the research of the topic; the key of factor of competitive advantage shall be emphasized and aimed at the specificity of the industry. In order to studying the relevance between the competitive advantage and the industry¡¦s specificity, the writer design the researching range as followings as: 1. The original of the competitive advantage. 2. The relevance between the competitive advantage and resource, strategy. 3. The relevance between the competitive advantage and the industry¡¦s specificity. Keywords: Competitive advantage ¡BIndustrial specificity¡B Chains-strand competitive advantage