Based on the http protocol used in the Web side, it realizes a not browser based, easy to transplant, highperformance real-time web chat system. System uses the ajax long polling model of the server push technique to build the http communication, using the open source LAMP architecture to build server-side programs, and use the xml file system to store real-time chat content, the front using the javascript jquery framework to achieve and browse deviceindependent ajax front-end program. Text chat and expressions, and ease of integration into the sns type of site. Project practice shows that the web php-based server push model real time chat system stability, it has a certain value.