Cooling structures with playground and oval section are concluded according to the real internal geometry of double-decker turbine guide vane. Experiments are carried out to investigate heat transfer coefficient of hybrid cooling configuration applied in those cooling structures. The influences of coolant Reynolds number, outflow of the film cooling, relative position of impingement holes and film holes on heat transfer characteristics are analyzed in details. There exist periodic peaks and troughs of local heat transfer coefficient due to the impingement. The heat transfer upstream is weakened because of the coolant suction of film outflow, while it can also result in some heat transfer enhancement in the very near region around film hole. It is also found that the performance of hybrid cooling structure increases with the increasing of inlet Reynolds number. Experimental results show that the cooling configuration affects heat transfer coefficient greatly and the rules are complicated. For the cooling configuration with playground section, higher cooling performance can be achieved when film holes are arrayed with jet holes sequentially . In the cases of oval section, higher cooling performance is gotten when the impingement holes and the film holes are staggered.