Vehicle charging system

A charging control unit of a vehicle charging system is provided with: a charging control master (2) that manages commercial power (P) and solar power generation power in a unified manner; and a plurality of charging control sub-devices (3) connected to each of the chargers (4), the charging control sub-devices (3) communicating with the charging control master device and controlling the current supplied to the vehicle by the charger to be connected, the charging control master device being provided with a second measurement unit (22), and the charging control sub-devices (3) being connected to the chargers (4). When surplus power is generated in the solar power generation power supplied to the load (9) and countercurrent is generated in the commercial power system, the second measurement unit monitors the situation, and the charging control master unit notifies the respective charging control slave units of surplus power information. The charging control sub-device receives the notification of the remaining