Abstract: In order to investigate the influence of turbulence intensity on the film cooling performance with a novel film cooling hole injection, film cooling effectiveness with double outlet hole injection has been simulated at the turbulence intensity of 0.4%, 10% and 30% by commercial code using the finite volume method. The blowing ratios change from 0.5 to 2.0. The numerical result agrees with the experimental data in the case of the cylindrical hole injection. The flow pathlines and the film cooling effectiveness with the double outlet hole injection have been obtained. The results show that the turbulence intensity and the blowing ratios have significant inluence on the film cooling effectiveness. The optimal blowing ratio is 1.0 when the turbulence intensity is 0.4% and 10%. The optimal blowing ratio is 2.0 when the turbulence intensity is 30%. At the blowing ratios of 0.5 and 1.0, film cooling effectiveness decreases when the turbulence intensity increases. At the blowing ratio of 2.0, film cooling effectiveness increases when the turbulence intensity increases.