在網路的世界裡，搜尋引擎對網路使用者的重要性逐漸升高，而藉由搜尋引擎之幫助，使用者可以在數位資訊爆炸的網路世界中，尋找到所需的資訊。惟此種便利之用途，亦造成著作權人之權利遭受侵權之疑慮，如搜尋引擎協助使用者找到未經合法授權之檔案而下載之；亦或搜尋引擎本身即複製該未經合法授權之內容而散布之等情形。各國對於搜尋引擎業者之侵權責任有相似規定，在如何之情況下搜尋引擎必須負擔侵權行為責任，而在何種情形下搜尋引擎業者可能可以免責，又在何種情形下搜尋引擎業者可能引用合理使用原則，本文亦嘗試提出各國之規定以供國內參考。 國內尚未有搜尋引擎業者之相關案例，故本文嘗試透過不同的國家中不同的搜尋引擎態樣進行案例分析，提出不同的搜尋引擎在不同之情狀之下，可能會造成的著作權爭議。如在圖像搜尋方面即提出美國的Perfect 10 v. Google案中縮小圖示之合理使用爭議，並同時提出多年前的Kelly v. Arriba案做為對照；中國大陸的七大唱片公司訴百度案在音樂搜尋當中是相當具有爭議的問題，本文亦提出其他相關的大陸案例做為對照；瑞典海盜灣的案件是P2P軟體變型後所產生之搜尋引擎，亦可以看出未來會有更多不同態樣的搜尋引擎出現；而新聞搜尋之問題，牽涉到重製權，近期Google與美聯社達成和解，本文亦為新聞搜尋此特殊的態樣為探討；而圖書搜尋方面則是以Google的圖書館計畫為基礎，並進一步探討合理使用的可能性。 本論文試圖提出美國、歐盟以及中國大陸的法規以及諸多案例，並探討在世界各地的搜尋引擎面對的著作權爭議問題，而這樣的問題會隨著科技的進步與發展有更多不同態樣的變化。我國目前尚未有相關的案例，故本文嘗試提出案例語法規的論述與探討，以期能予我國參考之。 / In the internet world, search engines become much more important to the users. By using the search engines, users can easily gather the useful data online. Although search engines bring so much convenience, but the copyright holders accuse the search engines of coypright infringement. For instance, the search engines sometimes help their users to download the copyrighted materials or themselves reproduce the copyrighted materials. The actions might bring them law suits.There are similar regulations of search engines in different countries. In some situation, search engines might defense themselves by claiming safe harbor regulation, and in others, they could claim the fair use doctrine. In the thesis, it states many cases from different countries to discuss the regulations. Due to the different functions of search engines, there are various cases. Kelly v. Arriba case and Perfect 10 v. Google case are about thumbnails search in the United States. Baidu v. EMI record case in China is about mp3 files search. Despite the traditional search engines, there are some relatively new and specific search engines, such as Private Bay. Private Bay is a search engine which focuses on searching bittorrent files for P2P downloading. In the future, there will be much more search engines with different functions. In the thesis, it also states the disputes of news search and book search.Google Book Project rised discussion worldwide. The thesis states the opinions of the ones who agree to apply the fair use doctrine on the project and the one who disagree to. In Taiwan, there have not been any copyright cases of search engines so far.The thesis states the copyright regulations in U.S., Europe and China, such as safe harbor, contributory infringement and fair use doctrine. By presenting the cases and regulations in other countries, the thesis also provide some inspirational ideas about the copyright disputes of search engine.