Abstract:Superalloy is an engineering material generally used at about 1 000 ℃. It is widely used in aviation, aerospace, power generation and heat treatment equipment. It is also an extremely important materials part for steam turbine generator. It is widely used in turbine combustion chamber, guide blades, turbo blades and wheel discs.The structure of these parts is complex, the thin wall parts are more, and the surface requirements are high. Regardless of the packaging and processing, it is very difficult, especially the processing of holes is even more difficult. Taking the hole processing of typical high temperature alloy thin wall part as an example, from the aspects of processing characteristics of the high temperature alloy materials, controlling the deformation of thinwalled parts, cooling method in hole processing, geometry parameters of the drill and selection of cutting parameters, the solutions were put forward, which had been proved to have good results.