In the context of the new era of socialism with Chinese characteristics, college, and university curricula need to reform the content of curriculum Civics and Politics in keeping with the times and introduce new era Civics and Politics elements into the curriculum content. The study integrates civic and political elements into the art theory classroom in a scientific and refined way according to the concept of civic and political curriculum. Then, data mining of students’ online learning behavior in online-offline blended teaching is carried out by constructing an improved Apriori algorithm. There is no significant difference between the midterm grades of the experimental group and the control group, and the mean score of the experimental group’s final grade is 10.55 points higher than that of the control group, and the significance P-value is less than 0.01. The experimental group and the control group present significant differences in the three aspects of artistic creation, artistic symbolism, and artistic content (P0.05 in the artistic genre and artistic performance, and the differences between the two groups are relatively small. There is a high correlation between the number of visits to the learning page, the completion of resource learning, the completion of chapter testing, and the learning effect, and there is no significant effect of homework submission initiative on the students’ learning effect.