The invention discloses a printing device for optical fiber cable jackets. The printing device comprises a base, a fixed seat, a tension regulating air cylinder, a hot embossing wheel, ink ribbon mounting reels, a lifting plate and a translation plate, wherein ink ribbons are wound on the ink ribbon mounting reels; the hot embossing wheel and a plurality of pinch rollers are mounted on the front surface of the translation plate; a rotary servomotor for driving the hot embossing wheel to rotate is mounted on the surface, opposite to the hot embossing wheel, of the translation plate; the translation plate is located in front of the lifting plate; two linear rails allowing forward and backward travelling are parallelly arranged on the upper surface of a bottom plate of the lifting plate; two sliding blocks are arranged on the lower surface of the bottom plate of the translation plate; the two linear rails are embedded in the grooves of the two sliding blocks respectively; the tension regulating air cylinder is vertically mounted on the base; a cylinder barrel of the tension regulating air cylinder is fixed on the base; and the tail end of a piston rod of the tension regulating air cylinder is connected to the bottom plate of the lifting plate. The hot embossing device provided by the invention can emboss clear and durable print content on the surface of an optical fiber cable jacket, and the print content is complete, durable and clear; and elastic pressure causes no indentation in the surface of the optical fiber cable jacket, so that the product quality is guaranteed.