The invention relates to the technical field of printing devices, and particularly relates to a printing device for cable markers. The printing device comprises a workbench, a material storage box anda guide block is arranged on the top part of the workbench, a discharge channel is arranged at the bottom of the material storage box, a guide groove which is inclined downwards is formed in the topof the guide block, the tail end of the top part of the guide groove is located right below the discharge channel, and a printing table is arranged on the front side of the guide block; a cable markergroove is formed in the top part of the printing table, a first air cylinder is arranged on the left side of the printing table, a piston rod of the first cylinder faces the printing table and the tail end of the piston rod of the first air cylinder is provided with a first push block, a second air cylinder is arranged on the right side of the guide block, a piston rod of a second cylinder facesthe front and the tail end of the piston rod of the second cylinder is provided with a second push block, a machine frame is arranged on the left side of the printing table, and an ink-jet printer isarranged on the right side of the machine frame. According to the printing device for the cable markers, the cable markers in the material storage box are fallen one by one passing through the discharging channel, the cable markers are arranged in an orderly manner, after the printing is completed, the cable markers are pushed out by the first push block, the cable markers located above are rolleddownwards to continue to be printed, the cable markers do not need to be replaced manually, and the printing efficiency is improved.