The utility model provides a special-purpose debug fixture for a double-sided printed circuit board circuit. The special-purpose debug fixture comprises an aluminium block which is provided with a rectangular groove, and a fixed block is installed in the rectangular groove. Two ends of the fixed block are respectively fixed on the aluminium block through screws. An adjusting block is disposed above the fixed block. The fixed block is provided with a plurality of vias along a direction of the rectangular groove. Adjusting screws are disposed in the vias on two ends of the fixed block, and the adjusting screws are used for adjusting height of the adjusting block along the direction of the rectangular groove. Tail ends of the adjusting screws are abutted against with the adjusting block. Set screws are installed in the vias on a middle part of the fixed block, and the set screws are used to fix a position of the adjusting block along the direction of the rectangular groove. Two ends of the adjusting block are respectively provided with a plurality of elastic probes. A lead pad of the circuit board is abutted against with tips of the elastic probes. The other ends of the elastic probes are connected with a debugging circuit through wires. The special-purpose debug fixture is convenient to debug and has high work efficiency, and product quality is guaranteed.