The commercial software (Fluent 6.0) has been used to simulate the flow behaviors in the cooling channel of turbine blade. Particular attention has been paid to the upstream and downstream regions of the holes.Important aspects of the study include:flow undergoes a strong acceleration and a subsequent rapid deceleration during passing hole.The presence of the holes will reduce mass flux of the channel and even cause a low speed region.The present results show good consistent with the experimental data

so the mature commercial software can be employed to study such complex physical phenomena.