The present invention discloses a bottle that can be conveniently stored. SOLUTION: The body includes a body, a top lid located above the body, and a water storage chamber installed in the body, and a female screw is installed in a circumferential wall of the water storage chamber. A circular chamber is installed in the bottom wall of the top lid, and a rotating cylinder extending downward is installed in the circular chamber so as to be rotatable. The female screw and the screw thread are formed on the outer surface of the rotating cylinder. A male screw connected by the above is installed, and an empty chamber penetrating vertically is installed in the rotary cylinder, and the device of the present invention can adjust the size of the bottle according to the liquid in the bottle, and the storage is convenient. A stirring device is installed in the bottle to increase the efficiency of dissolving the milk powder, and the device can automatically open or close the water outlet, and has a good sealing property. [Selection diagram] Figure 1【課題】本発明は収納便利なボトルを開示した。【解決手段】ボディーと、前記ボディーの上方に位置しているトップ蓋と、前記ボディーの中に設置された貯水チャンバとを含み、前記貯水チャンバの円周壁の中には雌ねじが設置され、前記トップ蓋の底壁の中には円形チャンバが設置され、前記円形チャンバの中には下方へ伸びている回転筒が回転できるように設置され、前記回転筒の外表面には前記雌ねじとねじ山によって連結された雄ねじが設置され、前記回転筒の中には上下に貫通した空きチャンバが設置され、本発明の装置はボトルの中の液体によってボトルのサイズを調節でき、収納が便利で、またボトルの中には攪拌装置を設置して粉ミルクを溶かす効率を高められ、装置は水出口を自動的に開け又は閉めることができ、密封性がよい。【選択図】図1