Case course teaching focuses on the combination of theory and practice, and aims to solve the problem of disconnection between theoretical knowledge and practical work. The teaching of case courses is in line with the training goal of Master of Engineering and is an important direction of education reform of Master of Engineering now. Taking case courses of Geological Engineering Master of Hohai University as an example, the construction and implementation of case courses are discussed, and suggestions for further improvement of case teaching are given. The results show that, as a teaching mode suitable for Engineering Masters, case teaching method can effectively mobilize graduate students' learning enthusiasm, promote their thinking, and enhance learning outcomes. Meanwhile, it is an enlightening, open and interactive learning process, which needs cooperation and joint efforts of teachers and graduate students. Case teaching method can be improved in the following five aspects:strengthening teachers' scientific research literacy, enriching teaching case categories, selecting typical practical engineering cases, strengthening teacher-student interaction, and improving the evaluation mechanism for graduates.