An image transfer sheet has a support with water permeability, and a releasing layer, an adhesive layer and an image transfer layer which are successively overlaid in this order on the support, the adhesive layer having a surface covering area ratio of 90% or more with respect to a surface area of the image transfer layer when the image transfer sheet is immersed in water and the support is peeled away therefrom, or a surface covering area ratio of 40% or more with respect to a surface area of the releasing layer. A toner image is formed on the above-mentioned image transfer sheet by electrophotography, or a thermofusible ink image or a sublimable dye image is formed thereon, or an aqueous ink image or a thermofusible ink image is formed thereon by an ink jet printing method, and such an image formed on the image transfer sheet is transferred to an image receiving material.