the polypropylene fiber volume content was 0.3%, different steel fiber content on the axis of reactive powder concrete after high temperature tensile strength, compressive strength, flexural strength, tension and compression ratio, the influence of the folding ratio and its variation law with temperature. The results show that the polypropylene fiber can effectively inhibit the bursting and improve the performance of the active powder. Mixed with polypropylene fiber and steel fiber can improve the mechanical properties of hybrid fiber reactive powder concrete after high temperature, 500 ℃ before damage rate is smaller, damage rate after 500 ℃; Mixed fiber with 2% fiber is mixed fiber active powder concrete high temperature, the pull ratio of the pressure ratio, the pressure ratio increases more, the hybrid fiber can complement each other.