Under greatly improvement in manufacturing quality and R¡®D capacity, Taiwanese Machine Tool Industry gradually emerging on the international and saturated domestic market in recent years. Also, domestic market is gradually saturated; machine tool manufacturer is forced to move out of Taiwan. It also caused Taiwan tool industry to internationalize and step into the phase of international market management. Most enterprise scale of Taiwan machine tool industry belong to small and medium-sized ones. Under limited resource, it is a critical issue to allocate the resource efficiently and to control the key success factors of international marketing management. This research use publicly listed machine tool industry companies in Taiwan to be the study object. First, besides collecting related literatures in domestic and overseas, this research also used questionnaire and interviewees to study the key success factors of Taiwanese Machine Tool Industry international market management, by conclude the following four factors, which were entire environment, industrial structure, business competitive advantages and international market strategy. Secondly, the AHP (Analysis Hierarchy Process) will be used as analysis method to evaluate the importance of key success factors in Taiwanese Machine Tool Industry international market management. Finally, the results showed that the most important five factors of the key success factors in Taiwanese Machine Tool Industry international market management were: 1) Enterprise's brand/Business goodwill; 2) Tax reduction policy; 3) Global marketing networks management; 4) Key components of self-control and 5) The impact of the international environment. The weight ratio of factors could provide the Taiwanese Machine Tool Industry as the index for operating in foreign markets