生存、獲利以及成長是企業的目標。第二次世界大戰之後，國際性的商業活動快速的成長，隨著全球商業活動自由化、國際化，加上資訊科技的興起，市場全球化與生產全球化為企業創造了機會，也使得企業面臨的競爭環境日趨嚴峻，企業面臨來自全球的挑戰，威脅其生存與獲利。在競爭環境的迅速變動下，企業為了追求永續經營，不斷的成長成為企業生存之必要條件。購併是企業追求快速成長的捷徑之一。 雖然購併能夠幫助企業迅速取得所需要的關鍵資源，但是從所收集的資料顯示，失敗的購併案例還是佔了七成之多，可見成功的購併是一件相當不容易的事。 本研究所描述的個案企業是目前世界上歷史最悠久的化學與製藥公司，公司成立的日期可以回溯到西元1668年。以購併取得所需要的關鍵資源在該企業是常見的作法，所以該企業透過經驗的累積發展出購併相關活動的標準作業程序（SOP）。但是即使已經有豐富的購併經驗，並不是每一件購併案都能夠達成原先所設定的目標。 本研究希望透過研究實際購併案例的啟動購併動機與後續整合行動以印證相關購併理論，並且整理歸納出成功的購併案例中值得學習的作法以及失敗的購併案例中為何失敗的地方以供未來想要採取購併方式的企業作為參考。 歸納個案企業的購併案例得到以下結論。企業選擇購併作為成長方式的動機是為了達成綜效理論中所提及的啟動綜效、營運綜效和市場綜效。至於後續整合行動，在事前必須要有清楚的整合計畫、工作小組、組織架構與人事布局；然後透過即時且透明的溝通管道傳達給每一位員工；並且強化人力資源管理系統讓不管原本是屬於購併公司的員工還是被購併進來的員工都能夠清楚的瞭解自己在購併後的新組織中可能的職涯發展，協助所有員工穩定下來以渡過整合變動期。 / Survive, gain and grow are the targets for all companies. Business environment has been changed and globalization is the mainstream for all business activities after World War II. This change creates opportunities but also bring threats to companies. Companies now have to face challenges from all over the world. Keep growing is the means for companies to keep survival from these challenges. Merger and acquisition（M&A）is one of the shortcuts for companies to pursue fast growth. M&A can help companies to get key resources quickly. However, the chance to get fail is extremely high up to 70% from collected research data. Apparently it is not easy to have a success M&A case. This paper is describing a more than 300 years old pharmaceutical company whom accumulates a lot of experiences in M&A cases from company history. These M&A cases will be analyzed to prove related theories. Key successful factors will also be concluded for companies who will choose M&A as their growth alternative for reference. To sum up illustrated M&A cases, the motivation of a company to trigger M&A is aiming for starting synergy, operating synergy and market synergy. To ensure post-merger integration can proceed smoothly, it requires clear integration plan which contains dedicated task forces for execution, well-thought-out organization structure and important position appointment. Reinforce personnel system to ensure its function can provide necessary and sufficient assistance to all employees timely. Transparent and open communication channels shall be established in order to eliminate insecure atmosphere.