Car door plate improved structure

A car door plate improved structure comprises a car door plate (1). A wiring harness clamping buckle (101) for fixing a wiring harness and a guiding track fixing column (102) for guiding column mounting are arranged on the car door plate (1). The car door plate improved structure is characterized in that the wiring harness clamping buckle (101) is a bridge-shaped sheet, the two ends of the bridge-shaped sheet are fixed at a door plate face of the car door plate (1) respectively, the wiring harness can penetrate through the bridge-shaped wiring harness clamping buckle (101), the bridge-shaped wiring harness clamping buckle (101) and the door plate face of the car door plate (1) are in arc transition connection, and the guiding track fixing column (102) is in a top-end-large cone shape. The structure of the wiring harness clamping buckle and the guiding track fixing column on the car door plate is improved, accordingly, when the wiring harness penetrates through the wiring harness clamping buckle on the car door plate, the wiring harness is prevented from being damaged by scratching by the clamping buckle, the bottom wall thickness of the guiding track fixing column is enhanced, and breaking of the guiding track fixing column is avoided. Only an existing car door plate product needs to be improved easily, the whole structure can be achieved, and manufacturing price is low.