A multi-layer changeable-mask includes a plurality of paper plates which is overlapped with one another, the lowermost paper plate has a periphery thereof extended outward to form a connecting section with at least 5 mm in measurement, each of the paper plates has a sewing line at a center axis thereof, the uppermost paper plates is adhered an expression page at an upper surface thereof, each of the paper plates is also adhered with an express page at a surface thereof, and each of the paper plates is disposed with a fastening member at right and left sides thereof. Using the aforesaid structure, the paper plates in the various layers are folded to the left or right as desired, thereby changing between different facial expressions. In addition, the process of changing expressions is performed so quickly that others are unlikely to notice to give others surprising effects and originality.