It is very important and meaningful to improve college students' engineering consciousness and project practice ability in engineering graphics teaching, so that excellent engineers, who adapt to the development of economy and society, can be cultivated. Based on the research and analysis situation of the home and abroad in engineering graphics teaching, many methods to cultivate students' engineering consciousness are proposed, concrete measures include: constructing the teaching method system of case-based teaching technique; building the content system which begins with the three-dimensional configuration design as a starting point, lays equal stress on a variety of expression modes, emphasizes the cultivation of ability to freehand drawing and teaching of engineering application, and pays attention to practical teaching.

Nowadays, with the rapid development of network, the combination of online courses and traditional classrooms has become the trend of the times. In the traditional classroom, there are problems such as less teaching information, monotonous teaching methods, and resources cannot be shared. This paper is aimed at mechanical design, manufacturing and automation, focused on undergraduate teaching, taking the specialty course "Mechanical Manufacturing Technology" of Tongji University as an example, exploring an online video course based on "learning-oriented, teaching-imparting-new, short-to-long". The new teaching mode fully meets the students' needs for knowledge of practical engineering.