Many areas have been successfully covered by data mining (DM) to date, and its application in education is also on the rise every day. However, it is used almost nowhere in online English classes. With the spread of mobile devices such as the Internet and smartphones, people’s learning, work and life have all changed significantly. Smartphones have surpassed Web pages and laptops to offer students basic hardware support for anytime, anywhere, and all-around mobile learning. Mobile learning is open and unrestricted; therefore, it supports self-study. With the spread of online English classes, a large number of data on online learning have been gathered. Therefore, we need to apply DM techniques in online learning. DM technology can assist in detecting problems of online learning through data analysis. It can find problems in the online learning environment and offer suggestions for enhancing the quality of online learning. DM has been added to the new innovations in online English teaching and has received little attention. DM refers to problems in the current online English teaching that we wish to address. According to the mining results, an analysis of the present online English teaching has been conducted. Provide some references and support for the construction of an online English-teaching platform to promote the development of online English teaching. It can provide links to online teaching of other subjects as well. Based on the above investigation and calculation, the use of the English digital learning platform has increased the efficiency of learning by 26%.
