A pet chest strap with a mount includes a chest strap body and a hardware holder fixed and locked to the chest strap body. The hardware holder has a locking assembly and a connecting terminal child-and-mother seat; the chest strap body includes a flexible printed circuit component with plural LED luminous bodies attached onto the flexible printed circuit component and packaged with a resin; the LED luminous bodies are connected to the connecting terminal child-and-mother seat of the hardware holder through the flexible printed circuit component. The invention has the features of powerful function, simple structure, and reasonable design and uses a hardware holder to achieve the effect of combining different hardware components to improve the environmental adaptability of the product, so as to meet the using requirements for different occasions and environments.
