Abstract: During the long time flight in the aerosphere,the hypersonic vehicles’front edge structures are heated badly and affected greatly by thermal stress.Therefore it is necessary to an-alyze the stress field of the front edge structure.The hot structure experiment of hypersonic ve-hicles’front edge was done in the arc heated wind-tunnel.During the experiment high tempera-ture strain was measured using the high temperature strain gages.In this paper,the experimen-tal equipment,the experimental condition,the experimental model and calibration of thermal output are introduced.The experimental data of two kinds of model materials including carbon composite and heat-resistant alloy are analyzed.The computational results verifies the experi-mental data.The temperature of the experimental strain measurement was 600℃.The experi-mental results show that the front edge model’s side flat is in a normal stress state.The results shall be an important reference for structure optimization design.