In order to understand the impact resistance properties of RC beams strengthened with high strength steel wire mesh and high performance mortar. Study of drop hammer impact test on 7 simply supported RC beams. The effect of impact hammer, velocity and energy on the impact resistance properties of RC beams was analyzed. Moreover, the failure pattern and the impact resistance before and after strengthening were contrasted. The experimental results showed that the impact resistance properties and ductility of the RC beams were significantly improved, and the high performance mortar had good impact resistance, the polypropylene fiber in the mortar made outstanding contributions to the integrity. Meanwhile the high strength steel wire mesh and high performance mortar can be a good bond, jointly play a role. In addition, the diameter of the steel wire can affect the impact resistance of the strengthened RC beams, we can choose according to the actual need.