A heat-sensitive transfer sheet that is used in an image-forming method using a heat-sensitive transfer system, which method comprises the steps of superposing the heat-sensitive transfer sheet having at least one yellow heat transfer layer, at least one magenta heat transfer layer, and at least one cyan heat transfer layer on a support, and a heat-sensitive transfer image-receiving sheet having at least one dye receptor layer on a support, and then transferring at least three kinds of heat transferable dyes to the dye receptor layer sequentially, which heat-sensitive transfer sheet satisfies the following Formula (1): μ1>μ2>μ3m  Formula (1) where μ1, μ2 and μ3 are coefficients of static friction as defined herein.