The utility model discloses a fixing support for a transformer substation secondary circuit wiring drawing. The fixing support comprises a cross arm rod, a supporting rod, a base plate and clamps capable of being used for clamping the secondary circuit wiring drawing. The supporting rod is vertically arranged, one end of the supporting rod is fixedly connected with the base plate, the other end of the supporting rod is connected with the cross arm rod arranged horizontally, and the clamps are arranged on the cross arm rod and can slide along the cross arm rod. According to the fixing support for the transformer substation secondary circuit wiring drawing, the secondary circuit wiring drawing can be conveniently fixed and unfolded, workers can conveniently work according to the drawing in the secondary circuit wiring process, the working efficiency is greatly improved, and the wiring correct rate is increased. In the wiring operation process, the secondary circuit wiring drawing is not damaged, safety of the secondary circuit wiring drawing is ensured, and it is avoided that late-period maintenance for a secondary circuit is affected due to damage to the secondary circuit wiring drawing.