The invention relates to a disaster recovery backup vehicle-mounted emergency charging method for a routing inspection UAV (unmanned aerial vehicle) motorcade. The method comprises the steps that an intelligent charging circuit board controls a storage battery pack to charge a UAV lithium battery through a DC/DC charging module of the intelligent charging circuit board when a vehicle is moving, and the storage battery pack carries out the charging of 220 AC equipment carried by a disaster recovery backup emergency worker at the same time through a DC/AC module; the intelligent charging circuitboard controls a vehicle-mounted generator to charge the UAV lithium battery through the AC/DC module and the DC/DC charging module of the intelligent charging circuit board when the vehicle is parked on a disaster recovery backup site, and the vehicle-mounted generator charges the storage battery pack at the same time through the AC/DC module; the intelligent charging circuit board controls thestart of a fan when the internal temperature of a cabinet is detected to be greater than a threshold value or there is fire in the cabinet. The method effectively improves the utilization efficiency of the UAV battery, greatly improves the endurance of an UAV, greatly enlarges the routing inspection range of the UAV, and plays an important guarantee role in the UAV routing inspection after diasters.