In recent years there were series of cases about copyright infringement concerning search engine in China. How to avoid the copyright risk is very important for search engine service providers to operate their business. At present, there are normally four kinds of copyright infringing activities related to search engine. This paper separately analyzed the technological principles and infringing activities of the four search engine services: Snapshot of Web Page, Temporary Link, Hostile Plug-In, Search List, and then gave corresponding solutions how to avoid the infringing risk. Finally some ma...