To provide a processing method for a silver halide color photosensitive material for a wide proof which improves unevenness in a white background and has production suitability as a proof.

In the processing method for the silver halide color photosensitive material in which the silver halide color photosensitive material for a proof of ≥450 mm width having on a support at least one photosensitive silver halide layer containing a silver halide emulsion spectrally sensitized with a sensitizing dye is processed through at least a color developing process, a desilvering process and a washing process or a stabilizing process, a processing solution in at least one of processing tanks constituting the processing processes contains a compound which shifts the maximum spectral absorption wavelength (λmax) of an aqueous solution of the sensitizing dye by ≥±5 nm.