Abstract: The value of geotechnical engineering cases namely typical cases in geotechnical engineering mainly lies in three aspects.First,geotechnical engineering cases are a model of success and failure warning.Second,they are the same proportion of scientific experiments,because the calculation can not be completely accurate,only prototype measurement is quantitative Third,they are the source of new concepts and new methods.Demonstrate with actual examples.And it is pointed out that:cases provide a fresh and vivid teaching material;cases are a treasure trove of gathered both positive and negative experience;cases are the source of revision of standards and specifications;cases are the foundation of the innovation theory and technology.