A method and system for measuring non-verbal behavior of a teacher. The measurement method comprises: performing three-dimensional modeling on a classroom, analyzing two-dimensional image information of a teaching video, and calculating three-dimensional coordinates and Euler angles of the teacher's head in each frame of the video to obtain line-of-sight point data of the teacher, and projecting a line-of-sight point in a three-dimensional modeled classroom space to visualize the line-of-sight point of the teacher. The attention distribution of the teacher when teaching is understood by means of analyzing the dispersion and coverage of the line-of-sight point of the teacher; the teaching video is grouped every five frames, head movements of the teacher are analyzed by means of using the Euler angles of the teacher's head, and different teaching behaviors corresponding to continuous head movements are identified, thereby clarifying the teaching style and classroom atmosphere of the teacher.