The surface temperature of filmcooling blade was calculated by using computational fluid dynamics software Numeca and the Numeca results were then input into the finite element software Ansys as the boundary condition in the finite element analysis.The temperature field and thermal stress of the blade were analysed.Under several different temperature fields the natural frequency of blade was calculated.The influence of making filmcooling holes on natural frequency was investigated by using the equivalent material parameters.Temperature field has great influence on natural frequency of blade.Holes diminish natural frequency of blade.