The present invention discloses a simulation teaching system of vocational education, including a man-machine operation module, a theory teaching module, a theory testing module, a 3D simulation teaching evaluation module, a video acquisition module, a human expert assessment and guidance module, a comprehensive evaluation module, a hard question assembling module, a hard question solving module, and a CPU. The invention realizes 3D input of teaching materials, enabling the students have a realistic sense of being personally on the scene, greatly improving their interest in study, and improving the efficiency of learning. The establishment of simulated three-dimensional training scenes provides a virtual training environment for students and realizes the 3D simulation training test. As the whole simulated training process is recorded through a camera, evaluation can be made by teachers on different students' practical situation, so the output for guidance and daily tasks can be more targeted. In addition, hard questions arising in students' learning can be assembled and answered, therefore, increasing the efficiency of vocation education.