To provide a processing method for a silver halide color photographic sensitive material having a thick support excellent in magenta pressure resistance, scratch resistance and edge contamination resistance.

In the processing method for the silver halide color photographic sensitive material, the silver halide color photographic sensitive material having one or more photosensitive silver halide emulsion layers and one or more non-photosensitive hydrophilic colloidal layers on the support obtained by covering both sides of a paper base with a polyolefin resin layer is processed through processing steps consisting of a color developing step, a blix step or a bleaching step and a fixing step, a stabilizing step or a rinsing step, and a drying step, wherein the support has a thickness of ≥240 μm and at least one processing solution used in the processing steps contains a sulfinic acid derivative represented by the general formula (I): RSO2M.