A wet-developing electrography photoreceptor which has excellent durability and solvent resistance and is manufactured stably by using specific physical indices of an electron transporting agent and a binding resin is provided. A wet-developing image forming device is also provided. The wet-developing electrography photoreceptor comprises on a conductive base a photosensitive layer containing at least a charge generating agent, an electron transporting agent, a hole transporting agent, and a binding resin. In such a wet-developing electrography photoreceptor and a wet-developing image formingdevice used in the wet-developing image forming device, the inorganic value/organic value (I/O value) of the electron transporting agent is 0.60 or more, and the inorganic value/organic value (I/O value) of the binding resin is 0.37 or more. Alternatively the molecular weight of the electron transporting agent is 600 or more and the inorganic value/organic value (I/O value) of the binding resin is 0.37 or more.