Provided are a control device, a power receiving device, an electronic device, a contactless power transmission system, and a control method capable of preventing an unintentional shutdown release in an electronic device that charges a secondary battery using a contactless power transmission. The control device includes a charging-system circuit that charges a charging subject based on electric power received from a power transmission device, and a discharging-system circuit that supplies power to a processing device based on electric power from the charging subject. The charging-system circuit has a charging-system control circuit that operates based on electric power received by the charging-system circuit. The charging-system control circuit receives a shutdown release notification sent from the power transmission device after the power receiving device is docked to the power transmission device, and based on the shutdown release notification, releases a shutdown state.