This is a dog harness that integrates the functions of a vest and a traction rope. The back cover is embedded with an anti-rush core, designed based on the principle of car seat belts. When the dog rushes suddenly, it will automatically lock without manual operation by the owner, ensuring safety and reliability. The core is equipped with a winding slot to store the traction rope. When the rope is not needed, it can be retracted into the core, allowing the dog to move freely and freeing the owner's hands.