Abstract: This experiment study on the application of high temperature heat-pipe to the ther-mal protection was carried out in CAAA. With the arc heated wind tunnel, the high tempera-ture, supersonic flow field was created. A principle thermal protection model with a high temper-ature heat-pipe in it was heated; the surface temperature distribution was measured by an infrared temperature instrument, contrast to general composite material model, and the stagnation point temperature reduced distinctly. We found the high temperature heat-pipe transfer the heat effec-tively from the high temperature field to the lower field, and the thermal protection performance was showed.