安隆財報醜聞造成其簽證會計師事務所聲譽受損，有鑑於以往的文獻對於Andersen聲譽受損與其簽證客戶股價關聯之探討，多僅限於美國本土，因此，本研究希望能擴大視野，由全球的角度來探討國際結盟會計師事務所聲譽受損在各地資本市場的外溢效果。本研究將針對世界各國Andersen簽證客戶進行研究，研究對象選取同Bhattacharya, Daouk and Welker(2003)所研究之國家，並扣除無法從Datastream獲取股價資料的簽證客戶，故最後選取34個國家892家公司為研究對象。 本研究旨在透過股價的分析，探討國際結盟會計師事務所聲譽受損對客戶股價的影響，研究結果指出，法律執行力較差、避免負盈餘程度越高、資本市場重要性越大的國家，簽證客戶股價因為國際結盟事務所聲譽受損而遭受股價下跌的機率較高。本研究進一步探討股價下跌幅度與不同地區之法律環境、會計資訊品質與資本市場成熟度間的關係，實證結果均無法支持本文先前的預期，各國股價下跌的幅度與該國法律環境、會計特性以及資本市場規模並沒有系統性的相關連。 / The financial scandal surrounding the collapse of Enron Corporation caused an erosion in the reputation of its auditor, Andersen. In consideration of past research about such article was confined to America only, we extend the field of vision to investigate the spillover effects by examining the cumulative abcdrmal returns of clients of the auditors across 34 different areas. In order to include the CPA-firm clients’ name and price data, we merged the data from Worldscope and Datastream, and our sample was 892 firms across 34 countries. In this paper, we examine the auditor’s clients’ stock price reactions to the deterioration of Andersen’s reputation after its admission that a significant number of documents had been shredded on January 10, 2002. Our results suggest that when news about Andersen’s January 10, 2002 shredding admission was released, the areas with weaker law enforcement, higher degree of the loss avoidance, and more developed financial market are more likely to react negatively to Andersen’s tarnished reputation, but there is no further evidence to show that the magnitude of the respond is associated with the legal environments, the characteristics of accounting earnings, and the development of the financial market.