Network teaching resources refer to all kinds of resources specially designed for teaching purposes or available for educational purposes. According to the form of resources, it can be divided into: educational environment resources, educational information resources and educational human resources; Depending on the object used. Network education resources can be divided into three categories: learning resources, scientific research resources and lesson preparation resources. Among them, teachers themselves are very important human resources, and teachers' ability to acquire, identify, process, process, transmit and create information, as well as their accumulated experience, ideas and practice patterns in the process of teaching and scientific research, are all important components of online teaching resources. According to the Technical Specification for the Construction of Educational Resources (Draft for Comment), the resources that can be built in China at present mainly include 9 categories, namely; Media materials (including text, graphics/images, audio, video and animation), test questions, test papers, courseware and online courseware, cases, literature, frequently asked questions, resource directory index and online courses. In addition, other types of resources can be added according to actual needs, such as e-books, tools, software, movies, etc.