A kind of pet cap structure improvement of what is closed in this creation system, and being includes a cap body, a brim of a hat and an at least band； The cap body is coated by a cloth body and is combined, and the cap body center is made to form an accommodating space, which, which extends, sets the what cap body front end； The band system installs the what cap body Hou side both ends, adjusts cap body accommodating space volume by a fastener clip； Wherein, the cap body Hou side top is opposite opens up two crect ear holes, and cap body leading edge neighbour's the brim of a hat junction system bend the brim of a hat can along the folding line along a folding line is equipped with. 本創作係關於一種寵物帽結構改良，係包含有一帽體、一帽簷及至少一束帶；該帽體係由一布體包覆結合，使該帽體中央形成一容置空間，該帽簷係延伸設於該帽體前端；該束帶係裝設於該帽體後側兩端，藉一扣件卡掣調整帽體容置空間體積；其中，該帽體後側頂端相對開設二立耳孔，且該帽體前緣鄰帽簷連接處係沿設有一彎折線，使該帽簷可沿該彎折線進行彎折。
