The present invention refers to a leash strap for a pet, which comprises a three-dimensional embracing piece, a connecting band, a pair of foot wearing sleeves and a leash. The three-dimensional embracing piece comprises a V-shaped upper chest embracing portion; the connecting band is connected to the two ends of the three-dimensional embracing piece; the double-legged wearing space is a space formed by the three-dimensional embracing piece and the connecting belt, which can be worn by the pet's feet together. The tether portion is connected to the three-dimensional embracing piece. The present invention forms a main structure of a chest strap by using a sheet-shaped three-dimensional embracing piece, and has a strong structure, and can form a double-foot wearing space around the connecting belt, which can be more convenient to wear the pet's two feet at the same time; In addition, the contact structure of the sheet structure is large, and the discomfort caused to the pet during pulling can be reduced, so as to achieve convenient wearing and enhance the wearing comfort.本創作係指寵物用的牽繩胸背帶,其包含有一立體環抱片、一連接帶、一雙足穿套空間以及一牽繩部。立體環抱片包含有一V字形之上胸環抱部;連接帶連接於立體環抱片之兩端;雙足穿套空間為立體環抱片與連接帶所環繞形成之空間,可供寵物的雙足共同穿設;牽繩部連接於立體環抱片。本創作藉由使用片狀的立體環抱片來形成胸背帶的主結構,其結構較強,而可與連接帶環繞形成一雙足穿套空間,可同時穿套寵物的兩腳更為便利;此外,片狀結構接觸面積較大,而可降低拉扯時對寵物造成的不適,以達成方便穿戴及提升穿戴舒適感的目的。