Testing machine for LED (light emitting diode) light source plate

The invention discloses a testing machine for an LED (light emitting diode) light source plate. The testing machine for the LED light source plate comprises a light source plate conveying mechanism, a light source plate electrifying mechanism, a light source plate measuring mechanism and a printing and labeling mechanism, wherein the light source plate electrifying mechanism comprises a movable first stopping piece, a power supply rack and a jacking subassembly; the power supply rack is provided with a plurality of conductive pins; a light source plate enters a testing workstation by the first stopping piece; the jacking subassembly jacks up the light source plate so that the light source plate is in contact with the conductive pins; the light source plate measuring mechanism comprises a camera and a computer connected with the camera; a luminous state of the light source plate is photographed by the camera and is conveyed to the computer; and the printing and labeling mechanism comprises a printer, a labeling subassembly and a movable second stopping piece. When labeling is required, the computer drives the printer to print labels, the second stopping piece stops the light source plate from moving again, the light source plate enters a labeling workstation, and the labeling subassembly sucks a label on the printer so that the label can be adhered to the light source plate. The brightness of the LED light source plate is detected automatically, and the manufacturing cost of the LED light source plate is reduced.