The invention discloses a cold rolled tube unit which comprises a loading platform, a feeding section, a main machine, a short tube receiving table, a rolling technology lubrication system, a hydraulic system, a tube blank inner wall lubricating system and an electrical apparatus control system which are connected in sequence. The rolling technology lubrication system, the hydraulic system and the tube blank inner wall lubricating system are connected with the main machine. The electrical apparatus control system is connected with all the mentioned sections. Through alternating work of a front blank chuck and a rear blank chuck, continuous feeding and rolling of a rolling mill are achieved, productivity is substantially improved, and due to continuous rolling without shutdown, production quality is more stable; a multi-pass intermediate annealing process in the traditional production technology is omitted, production technological procedure is greatly shortened, energy consumption is reduced, and production efficiency is improved; a control system achieves highly-automatic control, a man-machine interface module conveniently meets the requirement for controlling a machine of people, and the cold rolled tube unit achieves high speed, continuity, automatic control and long-stroke rolling, and is suitable for cold rolled production of copper-based alloy tubes of different specifications.