The invention provides a teaching quality evaluation system based on human face analysis, which belongs to the technical field of intelligent detection and analysis and solves the technical problem of modeling analysis between the teaching quality and classroom performance of a student. According to the teaching quality evaluation system based on human face analysis, the following several parts are included: S1, a human face recognition attendance module, S2, human face posture analysis, S3, facial expression analysis, S4, building of the relationship between the classroom performance and the evaluated teaching quality based on big data analysis, S4, a teaching quality evaluation method based on classroom performance, and S6, a teaching quality feedback mechanism based on big data analysis. The teaching quality evaluation system based on human face analysis has the advantages that through modeling analysis, the teaching quality is improved, and the teaching quality evaluation can be quantized.