：本文从搜索范围、检索方法、工作原理、结果描述、特点、效果评价等6个方面对5种中外网络图像搜索引擎即Lyco~、

WebSEEK、AmaziIlg Picture Machine、Ixquick、天网中英文FTP进行比较和评析，从而较为详细地介绍了网络图像搜索引擎的原理、优缺点和未来发展趋势。-This article is from the Search and retrieval method works, the results described characteristics, the effect evaluation of six aspects of the five kinds of Chinese and foreign Web image search engine that Lyco WebSEEK compare AmaziIlg Picture Machine, the Ixquick Skynet in English FTPand assessment, a more detailed descr iption of the principles of Web image search engine, strengths and weaknesses, and future trends.