I. Introduction
Traditional language learning is limited to dialogues with people and recording imitation and reading. In addition, it is time-consuming and labor-consuming to conduct oral tests by people face to face, and it is susceptible to the subjectivity of the examiner. Therefore, computer-assisted Language Learning (CALL) is playing an increasingly important role in modern Language Learning due to the development of deep learning, for computer intelligent speech testing system can give instant scores and feedbacks. Through an oral Language learning app, computer intelligent speech testing system can automatically grade students’ oral homework and give feed-back on pronunciation mistakes. Moreover, college English teaching mode is also changing in the way of adopting the intelligent language learning app to complete the speaking teaching task.