The invention discloses an automatic code spraying system for plastic profile rolled strips, which comprises profile output equipment, a code spraying device, a traction device and rolling equipment with one or more reels and a rolling motor in sequence along the profile delivery direction, wherein the reels are arranged in parallel. In addition, the invention also discloses an automatic code spraying method for the plastic profile roller strips. The invention integrates automatic code printing and rolling, is provided with safe protection measures, and realizes completely humanized intelligent operation by automatic control, thus lowering the production strength greatly, effectively improving the normal use efficiency of equipment and enhancing the production efficiency substantially.