Stepping in the 21st century, global marketing and the economy growth of the Third World Countries have become very competitive in term of costs and have affected both the economy and industry in Taiwan. where the unemployment increase and becomes a politic issue. Taiwan¡¦s Executive Yuan has launched the economy development project since October 2000 to develop the knowledge base industry and it is agreed and supported by elite from industry, government and also education field. ¡§Develop intelligent economy and move for global business¡¨ has been listed as a first objective among 5 main objectives which was set by the cabinet meeting. However, there are different opinions to the goal of ¡§strengthening the core business competitiveness by implementing global marketing strategy¡¨. Core business competition is immeasurable but important to manufacturing industry. Normally Taiwan¡¦s entrepreneur will calculate the return of investment by gaining profit through lower product cost and large volume selling. But such strategy need to be further examined when the surrounding competitive countries have chasing from behind through technology development and better manufacturing capability. New business model, structure and industrial competitive strategy needed to be developed in order to recover from the business crisis, which faced by assembly industry. We need to find out an efficient business structure and core competitive strategy. It will be more helpful and effective by learning the successful experience from the well-known industry and sharing the findings within the assembly industry. Base on analyzing results and combining with the theories of ¡§ smiling curve ¡¨ and ¡§ New business model ¡¨ , we can make the production line more systematic and then upgrade the assembly industry¡¦s competitive advantage¡Aaccording to this study the successful models have been listed as follows: 1) To improve the product design technology , high tech manufacturing technology speed up the world wide customer service , we must upgrade the ¡§ smile curve ¡¨ to left to increase the extra value .Combine ¡§ core strategy ¡¨ and ¡§ customer interface ¡¨ , to achieve the ¡§Customer benefit ¡¨ 2) To apply to ¡§ Variant strategy ¡¨ to secure the market position , product knowledge , quality improvement strategy , and produce the variable product for grab niches . We must upgrade the ¡§ smiling curve ¡¨ and combine with ¡§new business model¡¨ ¡§ core strategy ¡¨and ¡§strategic resources ¡¨ to construct the enterprise core competitiveness. 3) To Implement ¡§New economy¡¨ and ¡§ Knowledge economy model ¡¨ such as innovating new process capability and supply chain management to improve product quality to cut manufacturing cost and upgrade manufacturing competitiveness. We must upgrade ¡§ smile curve ¡¨ to center to increase the value ; combine business model ¡§ Value network ¡¨and ¡§ strategy resources ¡¨ to improve enterprise all model capability.