To provide a multicolor image forming method expanded in reproducible hue range.

In the multicolor image forming method, an image receiving sheet having an image receiving layer and at least five kinds of thermal transfer sheets, which include thermal transfer sheets for yellow, magenta, cyan or black each formed by providing at least a photothermal conversion layer and an image forming layer on a support, are used and the image forming layers of the respective thermal transfer sheets and the image receiving layer of the image receiving sheet are superposed one upon another and irradiated with laser beam to transfer the laser beam irradiated regions of the image forming layers to the image receiving layer of the image receiving sheet to record an image.