In a cabinet that uses solid wood door panels, over time, the door panels may bend due to the dry climate. At this point, the cabinet straightener comes into play to bring the door back to straightness with proper stretch adjustments, ensuring that the tightness and aesthetics of the cabinet are not compromised. Selected high-strength aluminum alloy with excellent compressive and bending resistance, which can be adjusted subtly and accurately according to the specific conditions of the door panel. Whether it is the expansion and contraction of the wood due to seasonal changes or the slight deformation of the door panel caused by long-term use, it can be perfectly corrected with simple operation.