Abstract: With the exploitation and application of the film/substrate system in components of nuclear safety, it is more and more important to research the mechanical properties of film and film/substrate systems. Deriving from fundamental equation and combining with the analysis on the singularity of crack-tip fields, the asymptotic governing equations were deduced. With soluting-deterimining conditions, the stress and strain fields near the tip of mode Ⅱ crack were also obtained by using the shooting method. This paper provides a beneficial exploration for the final solutions of the corresponding problems encountered in engineering practices and building the material’s fracture rule.