Based on the UTAUT model, this paper studies the influence of individual performance expectation, effort expectation, social emotion, and facilitating conditions on the classroom interaction behavior in smart classrooms, and analyzes the correlation between classroom interaction in smart classrooms and teaching methods, willingness to use, students’ behavior, technology application, and social emotion. The empirical findings show that interactive teaching in smart classrooms focuses on using smart technology means to enhance teaching interaction and improve the learning experience. However, it also faces problems such as the optimization of teaching technology integration, innovation of teaching methods, and management of students’ behavior. It is necessary to upgrade the network infrastructure, improve the performance of teaching equipment, reconstruct the classroom interaction mechanism, strengthen classroom behavior management, and improve teaching plans to achieve the deep integration of smart technology and teaching interaction.