With the rapid development of social economy and technology, the application of technology in the field of education has also been further developed. The past paper information carriers can no longer fully meet the development needs of the modern society. In this context, this thesis explores a learning model that combines mobile learning based on mobile apps with English teaching. The school’s hardware facilities have been continuously updated with the development of social information technology, and intelligent voice systems have been continuously introduced into classrooms. This article focuses on exploring the application of mobile app in English teaching in a smart environment, using the implementation of the mobile learning English model, and dividing two identical classes into an experimental class and control class through questionnaires and comparisons. The experimental design finally concluded that the use of mobile app to assist English teaching in all aspects of the relative improvement of the English performance of the class, the teaching effect is obvious, effectively improves students' interest in learning English and, at the same time, realizes students’ mobile learning, changes the scope of teaching activities from classroom changes to a wider range, and plays a role in consolidating and supplementing classroom English.