Abstract In view of the vigorous development of Taiwan traditional industries, this research is aimed at the products of Taiwan traditional industries that are sold overseas and are subjected to the accusation of dumping. These imported countries want to protect their domestic manufacturers and curb the development of importing goods from Taiwan. Our domestic manufacturers, in particular the petrochemistry and steel industries, incur serious competition of the same kind of products from other countries with the way of great quantity and low-price dumping. It makes Taiwan producers postpone their investing plan and observe the proceeding situation to reduce their loss. Under the liberalization of world trade, every manufacture in his country strive to produce his core products and to sell them abroad. Every country includes the anti-dumping into his trade policy to protect his domestic industries. It evolves a protecting tool under the liberalization of world trade, and the authority of justice administration of each country also becomes a tool of trade protectionism. Taiwan domestic industries has to strengthen their financial structure and core products, to consolidate the information of products, yield and sales volume as well as the domestic and export selling price, to compare and to take action in advance. It would avoid the accusation of dumping by foreign manufacturers, and prevent other countries¡¦ dumping to us further. This article is to explore the impact of Taiwan entering the WTO and the relating handling solutions.