This study was focused on the rebar corrosion behavior in high strength concrete. Electrochemical methods such as open circuit potential method, DC polarization method, and AC impedance method were applied to investigate the corrosion resistance of high strength concrete. In addition, a numerical integration was used to obtain the equivalent cumulative thickness loss of rebar, which can be another criterion for evaluation of rebar corrosion. Test results show that high strength concrete has better corrosion resistance than normal strength concrete before crack initiation. However, corrosion reduces the bond strength between concrete and rebar is more significant in high strength concrete.