In this paper, we filtered fused and integrated online teaching learning behavior data by collecting basic information of teachers’ and student performance information, generated comprehensive assessment, and established a model of students’ online learning process. Finally, an assessment scheme was developed and tested using the online teaching of civil law courses as a case study, and the total learning efficiency was evaluated. The results showed that the proposed scheme in this paper is reliable and reasonable for assessing the teaching effectiveness of online education. The research results of this paper provide new ideas and methods for assessing the effectiveness of online teaching in civil law, which can help teachers better understand students’ learning behaviors and learning effects and improve their teaching strategies promptly.