In order to improve the effect of intelligentization of Chinese international education, this paper puts forward the application method of the data mining model. Through the collection, transformation, processing, mining, and analysis of a large number of random data generated in education and teaching, this method provides learning suggestions for learners, realizes evaluation and prediction, presents knowledge information for educators, realizes educational decision-making, and realizes the continuous optimization of the teaching process. The experimental results show that the relationship between teachers’ teaching and students’ scores is obtained through the analysis of association rules in data mining technology. The support and confidence of students’ scores taught by teacher B are 28.57% and 72%, respectively, and the support and confidence of students’ scores taught by teacher C are 19.05% and 70.59%, respectively. The two rules are established to a great extent through data association. Data mining technology can effectively optimize the effect of intelligentization of Chinese international education.