Chemical corrosion can have a degrading effect on the mechanical properties of rock masses, thus having an impact on practical engineering, so it is very important to study the dynamic response of rock masses under chemical corrosion. Dynamic impact tests were conducted on granite specimens after soaking in KHSO4 solutions at 2 different pH values (3 and 5) using the Split Hopkinson Pressure Bar (SHPB) test system, and another set of specimens without corrosion was set up as a contrast, in order to investigate the energy evolution of granite after acidic corrosion under air chamber pressures of 0.15 MPa. It was found that with the decrease of solution pH and the increase of corrosion time, the energy absorption rate increased, moreover the peak stress and peak strain were decreasing, indicating that with the increase of chemical corrosion, the granite deformation ability became worse and more easily damaged.