Online learning is a new education model. During the epidemic, online learning has become a global trend, and online courses have become more and more important in teaching. The continuous rise of online teaching has injected new methods and resources into traditional teaching. Online courses and online teaching can not only be used for different topics, but more importantly, it provides a better platform for communication and learning between teachers and students. Internet online learning is a new teaching model based on modern distance education methods. Internet online learning uses computer and network technology as the main tools. With the help of information technology, multimedia electronic modern teaching methods are used. When learning online, you can send text, sound and images, and you can also share screens and blackboards with students for teachers and students. Provide an intelligent and good learning environment. This article discusses the concept of online learning in detail and points out the advantages and disadvantages of online learning.