The invention relates to a balancing regulator for load in an electric vehicle charging station, which comprises a single chip microcomputer hardware system component group. The single chip microcomputer hardware system component group embedded with a load balancing algorithm is used to monitor the occupancy information of a charging pile through a CAN bus, and the power upper limit of the charging pile is controlled through the CAN bus. The power at charging peak and idle time is reasonably distributed on the premise that the total power upper limit does not rise to control the cost, the simultaneous charging requirements of all charging piles in the charging station are considered, the first arriving vehicle is also ensured to be fully charged, and when the vehicle is fully charged, thecharging capacity is released for other charging piles.