An image display medium capable of providing an image display with less change in the image density, with less change in the uniformness of the density and at stable density contrast even after repetitive rewriting over a long period of time, and an image forming apparatus using the image display medium are provided. The image display medium and image forming apparatus have a pair of facing substrates, at least two kinds of particles sealed in a space between the pair of the substrates in which the at least two kinds of particles have a characteristic that at least one kind of them is positively chargeable and at least one other kind of them is negatively chargeable, and the particles chargeable positively and negatively are of colors different from each other and a charge controller is internally added to one or both of the particles chargeable positively and negatively.