本論文主要以半導體設備大廠L公司、N公司間的併購案，來說明一個成功的併購後面的故事，L與N本論文將會針對包括購併成功後的財務、產品研發、文化融合、綜合績效等問題進行討論最終並給予建議。;Through mergers and acquisitions, the scale of the enterprise is expanded, which can effectively expand the scale of the company immediately. The expansion of scale can bring about the full utilization of resources, the full integration of resources, reduce the costs of management, raw materials, production and other links, and ultimately reduce the total cost. Internationally, mergers and acquisitions among large enterprises are emerging one after another. The main reason is to allow the original enterprise to enter a market that could not be entered, so that the enterprise can develop in the direction of diversification and increase the competitiveness of the company. But even if it is a merger and acquisition, cultural differences between the enterprises, factional struggles may make the merger that could have been one plus one greater than two finally drag down the two companies. This paper mainly uses the merger and acquisition case between semiconductor company L and N to illustrate the story behind a successful merger. How can the two large companies L and N play one plus one more than two after the merger? Finally, this paper will discuss and give advice on issues including finance, product development, cultural integration and comprehensive performance after the successful merger.