The invention relates to a stone cupboard, a preparation method used for the stone cupboard and a special agraffe; the technical problem to be solved is how to overcome the defect that the existing stone cupboard is not convenient for being assembled. The stone cupboard comprises a surface plate, a soleplate, a back plate and a side plate; wherein, the back plate and the side plate are verticallyconnected with each other and arranged on the soleplate together; a vertical edge is provided with N blind holes; the other opposite surface is provided with corresponding holes which are corresponding to the blind holes one by one; the holes are internally provided with expansion screws; the nail heads extends externally into the corresponding blind holes; the joint of the back plate and the topof the side plate is connected by the agraffe; wherein, N is positive integer; the invention also provides a corresponding preparation method and a special agraffe; the cupboard has the advantages ofsimple structure, anti-corrosion, long service life, no deformation, being easy for cleaning, being beautiful and graceful, and the like, is an ideal cupboard, can be quickly assembled and convenientfor being generalized; the special agraffe has low cost and is simple and practical.