Fuente: WIPO "hemp" A dotter special for a scratch-proof metal button for hemp and tencel blended fabric comprises a dotter body which is composed of a main machine body, a cross arm fixedly installed on the front side of the top of the main machine body, an upper pressing head fixedly installed on the bottom face of the cross arm, a supporting arm fixedly installed on the front side of the middle of the main machine body and a pressure bearing base fixedly installed in front of the supporting arm. The supporting plates are fixedly installed in front of the supporting arms and distributed on the two sides of the pressure-bearing base, a first transverse plate is placed on the front side of the top face of each supporting plate, a plurality of first longitudinal plates are fixedly connected to the back face of each first transverse plate, and cloth clamping structures are arranged on the first transverse plates and the first longitudinal plates. According to the device, the neat and accurate knotting position is achieved through the curve sliding groove and the cloth clamping structure, meanwhile, when the cloth clamping structure moves cloth, the action that the cloth clamping structure is lifted up and then put down is conducted, sliding friction between the bottom faces of knotted buttons and a supporting plate of a knotting machine is avoided, and the problem that the metal buttons are scratched is effectively solved.