The traditional theory teaching has been far from adapting to the requirement of students' practical ability in full-time engineering master's training. Case teaching method, as a kind of exploratory teaching model based on practical experience, has become an important way to train high level applied talents in vehicle engineering field. The construction of case library in vehicle engineering field effectively guarantees the teaching quality, improves studentsce, has become an important way to train high level andation for the application of case teaching method in vehicle engineering field. Through the construction of teaching cases in the field of vehicle engineering, the necessity, difficulty and feasibility of the case library construction have been analyzed. Some basic principles of the construction of case library have been proposed, the experience of case library construction and teaching practice have been summarized.