**3. Methods**

The objects of this study included 30 college students or above aged 20 to 30 who are divided into an experiment group and a control group, each with 15 subjects. The former conducted the experiment with the affective tutoring system and the latter conducted the experiment with the traditional tutoring system. The eye tracker was applied to perform eye movement analysis and tracking on both groups, and the whole experiment took about 15 min. At the end of the experiment, the subjects were asked to fill in the System Usability Scale, which took 10 min.
