To provide a silver salt heat developable photosensitive material having high sensitivity and low fog and excellent in illuminance irregularity properties, light resistance of an image and silver tone, to provide an image forming method of the photosensitive material using the photosensitive material, and to provide a silver salt heat developable hologram recording medium using the photosensitive material.

The photosensitive material has an image forming layer containing a photosensitive silver halide, a non-photosensitive fatty acid silver slat, a reducing agent and a binder on at least one surface of a support, wherein the photosensitive silver halide is a surface latent image type in exposure and is converted to an internal latent image type after heat development. The photosensitive silver halide is chemically sensitized in an organic solvent solution in a system in which there is no fatty acid silver salt.