Paper introduces a kind of design method of electronic component searching system. System acts ASP language as development way of dynamic web based on B/S mode. System can realize electronic component browser, searching, PDF file material uploading and download, etc. In this paper, we mainly introduce design of system parts of function sub-system and each web pages source file in detail. Though system practical running on web server and user feedback information, we get uniform good reputation. System can help student study electronic component function and use way, etc. In addition, some of system function sub-system can be replant into other web system. Through experiment, system has widely replanting and application value.