The invention provides a supporting device for wire crimpers. The device comprises a base, a supporting body and two support mechanisms, wherein the base is connected with the supporting body in a slidable manner; the supporting body is used for installing the wire crimpers; the base is provided with scales; the supporting body is provided with a pointer, the pointer is arranged corresponding to one scale and the scale and the pointer are used for indicating displacement of the wire crimpers; and the support mechanisms are arranged at two sides of the base respectively and are used for supporting the wire. According to the supporting device provided by the invention, the wire crimpers are arranged on the supporting body and the base is connected with the supporting body in a slidable manner, so that the supporting body can drive the wire crimpers to linearly slide on the base, the condition that the wire crimpers are always vertical to the axis of a metal fitting, that is to say, the crimping linearity of the metal fitting can be ensured and the crimping quality of the wire is improved. Furthermore, the supporting body can be accurately moved to the crimping position through coordination of the scales of the base and the pointer of the supporting body, the crimping position of the wire is more accurate and the crimping quality of the wire is further improved.