This research aims to verify the effectiveness and practicability of Liulishuo, an English-learning APP, in improving college students' oral English. The research adopts different student groups according to their different listening levels, and compares the scores of the pre- and post-practice tests of the control groups and the feedback analysis of the two sessions. The research results showed an upward trend, which proved the efficacy and practicability of Liulishuo in improving students' oral English.