The invention provides a trash intelligent recovering device and system for an electric power overhauling site. The trash intelligent recovering device comprises a collecting vehicle and a collectingdevice arranged on the collecting vehicle, the collecting device comprises a collecting unit, a sorting unit and a main control unit for controlling the collecting unit and the sorting unit, and a conveying unit is arranged between the collecting unit and the sorting unit. The sorting unit comprises a metal sorting unit, a plastic sorting unit and an electronic sorting unit which are located in asorting bin, and the sorting bin is internally provided with detecting equipment for detecting trash. An ultrasonic sensor for detecting first obstacles is arranged on the front portion of the trash vehicle, and infrared sensors for recognizing second obstacles are arranged on the left side and the right side of the trash vehicle. According to the trash intelligent recovering device and system, the trash can be automatically collected and recovered, the trash collecting efficiency is improved, and the labor cost is reduced.