Through the study of this course, students will understand the origin, development status and development trend of mechanical engineering, as well as the status and role of mechanical engineering in the modernization of national economy and national defense. Students understand the connotation and main research directions of the discipline of mechanical engineering, the knowledge, ability and quality that students majoring in mechanical engineering should possess, and the curriculum system of mechanical engineering. Through course learning, students can understand the major, stimulate professional interest and learning motivation, and play an active leading role for students to enter professional learning as soon as possible.