An electric vehicle smart charging system includes at least one smart charging pile and a cloud management center. Each of the at least one smart charging pile includes a charging gun, a power supply circuit, a camera module and a signal processing circuit. The power supply circuit is configured to provide electric power to the charging gun. The camera module is configured to capture at least one image associated with a vehicle. The signal processing circuit has at least one recognition model and is configured to use the at least one recognition model to perform an edge computation on the at least one image and control the power supply circuit according to a result of the edge computation. The cloud management center is configured to update the at least one recognition model of the signal processing circuit according to the result from the signal processing circuit.