The present disclosure relates to a rail mobile electric vehicle charging system capable of charging an electric vehicle by moving an electric vehicle charger to a certain position through a method of moving a plurality of electric vehicle chargers to a predetermined charge spot using a moving unit that moves along a rail and connecting an input port of the electric vehicle charger to a power terminal provided at the charge spot, so that there is no need to designate a dedicated parking lot for electric vehicle charging, and there are no problems with charging the electric vehicle even if electric vehicles and regular engine vehicles are parked without distinction, and there is no need to move the electric vehicle to another space even after charging is completed, thereby maximizing the convenience of charging and providing fire monitoring and fire extinguishing functions.