With the development of information technology, the construction of multimedia teaching environment based on network resources has gradually become one of the indispensable and important teaching methods in modern education, and it is also a hot spot in current teaching research. College students have initially acquired a certain self-study ability. Faced with fierce social competition, they are eager to learn more knowledge and constantly improve their own quality. As a platform for them to get information and communicate with each other, the network plays an important role. How to integrate the teaching content of colleges and universities into the network and spread the teaching content by using multimedia information is related to whether we can seize the network platform and give full play to the positive role of the network. Therefore, it is necessary to constantly explore the construction mode of multimedia network teaching platform in colleges and universities, to stimulate students' enthusiasm for learning as much as possible, and to mobilize students' active learning. First, the significance of multimedia network teaching in colleges and universities. Multimedia network teaching is a teaching form that takes the network as the carrier and carries out teaching activities through multimedia presentation. It is the product of the combination of information technology and modern educational theory. In colleges and universities, multimedia network teaching is of great significance and will surely become an important teaching form. 1. Seize the network information platform. The rapidly developing network connects the information world, and the emerging multimedia resources greatly enrich the carrier of information, making it more convenient and timely to obtain information. Nowadays, the network information is mixed, and college students, as the younger generation, are curious about new things. Therefore, we must strengthen positive guidance and let students establish the concept of civilized internet access as soon as possible.