The dynamic mechanical properties of concrete doped with 10%, 15%, 20% and 25% percentage rape straw ash were studied by using the Φ80 mm split Hopkinson pressure bar test equipment under 0.3,0.45, and 0.65 MPa impact load. The results indicated that the strain rate of rape straw ash doped concrete was positively correlated with the loading pressure. The peak stress increased with an increase in the loading pressure. The highest change rate of peak stress was achieved to be 63.63% for the concrete doped with 10% percentage rape straw ash under different impact load. Under the same impact load, the peak stress of rape straw ash doped concrete decreased with the increase of the content of rape straw ash. Compared with the peak stress of the controlled concrete, only the concrete doped with 10% percentage rape straw ash was higher thanit. It is found that the dynamic bearing capacity of concrete was the best for the concrete doped with the10% percentage rape straw ash.