To provide a method for granulating a color developer free of a quality change during granulation (e.g. a color developer for a silver halide photographic sensitive material) and to provide a method for granulating a color developer free of a quality change with age.

The method for granulating a color developing agent has a step for preparing a powdery color developing agent containing water of crystallization as starting material, a step for warming the powdery starting material, a step for applying pressure to the powdery starting material and a step for cooling the material granulated by the warming and the application of pressure.