Laser shock processing (LSP) is an effective surface treatment technology to increase the resistance of metallic components to high-cycle fatigue (HCF),stress corrosion cracking (SCC),wear,etc.,through imparting compressive residual stress on the surface.The requirement for aeroengine blade treatment and the principle of LSP were introduced at the beginning of this paper.The key theories and technologies for LSP were analyzed,including improving the pressure model and introducing the technique of eliminating wave reflection at the back of blade during treatment.The nanocrystallation of titanium alloy surface was realized for the first time using the method of laser shocking at the same time no impurity particles were introduced.Through treating one kind of aeroengine blade using LSP,the technology parameters were confirmed.The nature frequency,fatigue life and residual stress were measured.The results showed the blade performance was improved obviously,which established the theory and experiment base of laser shock processing on blisk. Laser shock processing (LSP) is an effective surface treatment technology to increase the resistance of metallic components to high-cycle fatigue (HCF), stress corrosion cracking (SCC), wear, etc., through imparting compressive residual stress on the surface. requirement for aeroengine blade treatment and the principle of LSP were introduced at the beginning of this paper. The key theories and technologies for LSP were analyzed, including improving the pressure model and introducing the technique of eliminating wave reflection at the back of blade during treatment. The nanocrystallation of titanium alloy surface was realized for the first time using the method of laser shocking at the same time no impurity particles were introduced. Thhough one kind of aeroengine blade using LSP, the technology parameters were confirmed. Nature frequency, fatigue life and residual stress were measured. results showed the blade performance was improved obviously, which established the theory and experiment base of laser shock processing on blisk.