An automatic telescopic dog walking leash that integrates color value and function meets the requirements of dog keeping regulations in various cities. The simple geometric element shape is also in line with the aesthetics of young people in this era. Silicone hand protection encirclement, under the premise of ensuring comfort, to ensure the safety of the palm, to avoid the pet too excited, strong pull, break free traction rope, scratch the palm. The structure adopts a mechanical automatic contraction mechanism, and the length of the one-key fixed rope is easy to recycle, making it easier to walk the dog. Modular design, can be matched with a variety of accessories, tractor and installation of lighting, sounder and other additional accessories, so that the function is more comprehensive, to meet a variety of use occasions.