This creation is a kind of anti-breaking three-line chest strap, including: a neck chest strap, a waist strap and a leash end. The neck chest strap has a neck strap and a front chest strap that are connected to each other； the waist strap connects the neck chest strap to fit the back, waist and abdomen of the pet； the leash end is connected to the top of the neck chest strap for the feeder to connect Leash. In this way, not only does the pet's waist have a layer of protection during use, but also prevents the pet from breaking free, so as to improve the safety of the pet when going out for a walk.本創作為一種防掙脫三線胸背帶，包含：一頸胸背帶、一腰間背帶以及一牽繩端。頸胸背帶具有相互連接的頸圈帶及前胸帶；腰間背帶連接頸胸背帶，供套設於寵物的背部、腰間及腹部；牽繩端連接於頸胸背帶的頂部，供飼主連接牽繩。藉此，使用時不僅讓寵物的腰間多一層保護，更能預防寵物掙脫，以提升寵物外出散步時的安全性。
