The securities firms in Taiwan, in order to cope with the environmental change and internationalization/globalization trend, expand businesses and the securities. Market share, have continuously carried out mergers and acquisitions activities or built strategic alliance. And, this leads to eliminate the shortcomings of excessive business points, uneven service qualities and unpredictable risks. Since competitions of securities business come from all directions, a securities firm will only gain competitive advantages by providing a wide variety of services. In the end, the big ones getting bigger becomes the rule in the securities business. This study is based on domestic financial sector M & A history and current status, Securities industry expansion into China's securities market, and future opportunities for cooperation. This study explores development of across strait securities dealers with the opportunity to cross-border mergers and acquisitions and joint ventures. In addition, it reviews literature, case study, and the subject of a rival company acquisition strategy development, and then compares two different acquisitions. By analyzing the acquisition strategy of studying companies, it concludes an advice for entering the Chinese market in the future for securities-related industries.