Abstract: In order to make high-speed EMU accurately parking in case of automatic driving, the software of high-speed EMU traction and braking simulation system was used to simulate the EMU "reverse drive", generate the controlling moving forward "kilometer mark- speed limit" (KM-SL) curve. The simulation system was developed by the Locomotive & Car Research Institute in China Academy of Railway Sciences Corporation Limited. The high speed EMU configuration parameters, track data and driver simulation parameters of the simulation system were used by the accurate parking algorithm. Because that the reverse driving used the same decelerate characteristics parameters as the forward driving, the high speed EMU could be decelerated and parked accurately. Additionally, the accurate parking algorithm also could be used to avoid over speeding when the railway speed-limit decreased, or the EMU had to coast downhill in the split-phase of the contact networks. By the simulation, the algorithm was proved reliable, and the automatic operation system could be used to park accurately and prevent the over speed.