The temperature field distribution of turbine blades is affected by the arrangement of film holes and the internal cooling channels. The different structures of turbine blades result in different heat transfer characteristics. In order to obtain the integrated heat transfer characteristics of turbine blades under film cooling conditions more accurately， the design test method uses embedded thermocouples to measure the temperature of the blade in the cross section and obtain a more accurate temperature field through the combination of thermocouple temperature measurement and infrared temperature measurement. The experiment is carried out to obtain the influence law of flow ratio， temperature ratio and pressure ratio on the integrated cooling efficiency of blades.