Online learning has become a widely used learning mode in which digital technology is the key driving force under Covid-19 pandemic across the globe. The validity of technology-enabled online learning is shown as the emerging force of learning resources, the co-creation force of learning interaction and the integration force of learning evaluation. However, there are also problems with this learning mode, such as insufficient digital literacy of teachers and students, alienation of personal experience, digital gap, security risks, which affect the quality and sense of acquisition of online learning. It is, therefore, vital for online learning governance to improve the digital literacy of teachers and students as a whole, promote online plus offline hybrid learning，strengthen the guarantee of online learning in terms of technology, resources and security in order to achieve high-quality online learning.