本研究旨在探討企業併購與經營績效關聯性之研究，以台灣上市公司為研究對象，問卷發放時間為2007年5月21日至6月4日，共計發放300份問卷，回收90份問卷，扣除7份無效問卷，總得有效問卷83份，問卷回收率為30.00%。

本研究主要的研究方法包括敘述性統計、因素分析、信效度分析、相關性分析以及變異數分析等統計方法。本研究透過文獻回顧、問卷調查進行資料的蒐集與分析，依據資料分析結果，獲得以下結論：

1.企業併購與經營績效有顯著影響。
2.公司員工人數及公司資本額在企業併購與經營績效上沒有顯著差異。
3.公司成立年數對經營績效有顯著的差異，但對企業併購並不顯著。

關鍵字：企業併購、經營績效、併購動機、台灣上市公司

The purpose of this paper is to understand the relationship between mergers & acquisitions and management performance, talking the Listed Companies in Taiwan as research objects. 300 questionnaires were sent out from 21 May to 4 June of 2007 and 90 questionnaires were returned, deducting 3 invalid questionnaires, 87 effective questionnaires were collected. The questionnaire retrieve rate is 30.00%.

The research mothed of this paper includes descriptive statistics, factor analysis, reliability and validity analysis, correlation Analysis and one-way ANOVA et al. Through collecting and analyszing materials by means of literature study and questionnaire investigation, the research obtains the following conclusion:
1.The mergers & acquisitions slightly significantly influences the management performance.
2.The number of employee and sizes of capital for different company data showed no significant differences toward mergers & acquisition and management performance.
3.The years of establishment has significant differences toward management performance, but unremarkable difference toward mergers & acquisitions.

Keywords: Mergers & Acquisitions, Management Performance, Motives of M&A, Listed Stock in Taiwan

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