Abstract: In today's post-epidemic era, mobile learning has gradually become an important way of learning for contemporary college students. With the rapid development of mobile learning, there are many drawbacks in college students' mobile learning, among which the common phenomenon is "defocused attention". Through questionnaire survey and thinking aloud method, this study analyzes the phenomenon of "defocused attention" of college students in the process of mobile learning. Based on the above experimental results, it is concluded that the phenomenon of "defocused attention" of college students in the process of mobile learning includes both external and internal reasons, and they interact with each other. The external reasons are mainly as follows: the interference of irrelevant information on the Internet and the lack of mobile learning software; the internal reason is that the learner's metacognitive ability is insufficient.

Key words: Mobile learning, Attention out of focus, Think-aloud