Abstract: Intergal Boun dary Layer Parameter" method based on a 2 dimensional film cooling flow and heat transfer prediction program STANCOOL is provided to pred ict the aerodynamic losses in the film cooled vane cascade.The comparison of the numerical analysis with the corresponding experimental data demonstrates that the present method is more suitable to the case when blowing rates are low or the film cooling is located at thick local boundary layer.Finally this method is compared with another loss predicting method,named "TOTLOS",and it is concluded that both methods have their own advantages and extent of application.In practice it is reasonable to use the two methods in combination.