The invention discloses a high-speed printer for cables. The high-speed printer for the cables comprises a frame, an ink supply device, a printing mechanism and an inkjet component, wherein the ink supply device, the printing mechanism and the inkjet component are supported on the frame. The ink supply device is communicated with an ink delivery hole of the inkjet component, an ink nozzle of the inkjet component is adjacent to a printing wheel of the printing mechanism, the printing wheel of the printing mechanism is driven by an adjustable-speed motor, a swing arm pressure regulating device is connected to a pressing wheel support arm of the printing mechanism, and a pressing wheel is in driving connection with an encoder. The ink nozzle of the inkjet component is fixedly connected to a nozzle shaft, the ink delivery hole is formed in the nozzle shaft, a printing wheel support seat is connected to a nozzle shaft support seat, and the ink supply device is provided with an ink viscosity regulating device. The high-speed printer for the cables has the advantages that the high-speed printer is capable of guaranteeing operating synchronism of the printing wheel and the cables and pressure stability of the pressing wheel, controlling ink viscosity difference and improving ink cleanliness; meanwhile, a nozzle component is succinct and compact in structure, so that high-speed printing for the cables can be guaranteed.