The invention discloses an automatic sheet metal part loading, processing and forming device. A sheet metal punch is mounted in the middle of the outer surface of a loading rack, a sheet metal cuttingmachine is mounted in a position, located on one side of the sheet metal punch, of the outer surface of the loading rack, and a measuring mechanism is mounted in a position, located on one side of the sheet metal cutting machine, of the outer surface of the loading rack. The measuring mechanism comprises a measuring rack, a main air cylinder, a movable L-shaped plate, a driven manual telescopic rod, a connecting rod, a round hole and a laser lamp. The measuring rack is mounted in a position, located on one side of the sheet metal cutting machine, of the outer surface of the loading rack. It is convenient to measure the edge of a cut sheet metal part by means of the measuring rack, the main air cylinder, the movable L-shaped plate, the driven manual telescopic rod, the connecting rod, theround hole and the laser lamp, so that the flatness of the edge of the cut sheet metal part is guaranteed. Meanwhile, a phenomenon that the edge of the cut sheet metal part deviates is prevented, so that the sheet metal part is cut more flatly.