The invention is applicable to the technical field of laser marking machines and provides a galvanometric laser marking machine and a marking control card thereof. The galvanometric laser marking machine comprises a laser, a galvanometric system, a focusing lens, an upper computer and the marking control card, wherein the galvanometric system and the focusing lens are arranged on the optical path of a laser beam emitted by the laser in sequence; the upper computer is used for storing marking parameters; the marking control card is used for acquiring the marking parameters and driving a galvanometric motor in the galvanometric system to rotate according to the acquired marking parameters so as to drive a galvanometer in the galvanometric system to rotate; and the marking control card is connected with the galvanometric system through an optical fiber, so that electromagnetic interferences generated by the traditional electric connection manner are avoided, in addition, the optical fiber is low in loss of transmitted signals and strong in antijamming capacity to provide possibility of the remote reliable transmission between the marking control card and the galvanometric system, thus, the working efficiency of the marking machine is improved, and the application range of the galvanometric laser marking machine is broadened.