Abstract In 2004 the market shares of Taiwan taken the place of Japan and became the 2nd in the world, only next to Korea.In the near future, we can forecast that TFT-LCD will succeed the semi-conductor industry to stand for the star industry of Taiwan. Since the supplychain of TFT-LCD are very long, complicate and most of the key components controlled by big supplier from Japan and USA. In market,From 2004 Q3, the new 6th and 7th TFT-LCD generation production line in Korea, Japan and Taiwan will start to trial run. At the same time, the LCD-TV market expands slowly by the high price. With all these unclear condition raise the worry about the future of this industry. It is difficult to forecast the feature condition. Taiwan¡¦s company face more competitive and uncertain condition. The conclusions of this study are presented as follows: This study simulates possible condition by poters Industrial scenario in the feature. According these possible condition this study also provide a process of develop competitive strategy for Taiwanese corporations. This research offer suggestions for Taiwanese corporations: 1) proceed to vertical integration in key components and mergers to achieve competitive scale. 2) cooperate or form alliance with Japanese corporations 3) make use of Co-opetition strategy to change the element of competition between Taiwan¡BJapan¡Bchina and Korea. 4) Taiwan companys should create competitive advantages by using the vertical allied with supplier and the strongest advantage of cluster effectiveness. 5) shift manufacturing to China to achieve cost advantage.6) It is good time develping own¡¦s brand. Then Taiwanese corporations will establish competitive advantages in this industry.