Taiwanese industry shifts to Vietnam become irresistible trend. In the last few years, Taiwanese investment in Vietnam has been transferred from medium-size companies lead to large enterprises. Therefore, after joining the WTO the Taiwan’s construction business is gradually multinational corporation and diversification tactics. In order to, integrated into the international market and facing competition directly. In my study in based on the case experience of entering Vietnam to identify the possible factors, and to likely to be affective to provide transnational corporations that are ready to enter the Vietnamese market. In the conference, to have more decision-making point of view, in considering Vietnam’s environment, decree, to better choose an entry business model, In order to, reducing enterprise losses, management risk, and making wrong business decisions.