In order to determine a reasonable content of reclaimed asphalt pavement(RAP)materials for reactive cold mix recycled asphalt mixture， the effects of different RAP con-tents on the optimum asphalt content， Marshall stability， moisture stability， high tempera-ture stability and low temperature crack resistance of recycled asphalt mixture were investi-gated by Marshall test， water-immersed Marshall test， freeze-thaw split test， rutting test，and trabecular bending test.The results showed that with the increase of RAP content， the optimum asphalt content decreased， stability descended， high temperature stability im-proved， while the moisture stability and low temperature crack resistance declined.The op-tim um RAP content was 40%， the corresponding optimum asphalt content， the initial sta-bility(2h) ， and the molding stability(12h) were 4.2%， 4.37kN and 9.57kN respective-ly.The ratio of immersion residual stability and freeze-thaw splitting strength can reach 83.3%and 76.1%， the dynamic stability is 3771 times/mm， and the bending-tensile strain is2406.94pe.