The invention discloses a thermos bottle. The thermos bottle comprises a shell, a thermos bottle liner arranged inside the shell and a bottle cap. The thermos bottle is characterized by further comprising a spherical bottle stopper suitable for enclosing a bottle mouth of the thermos bottle liner, wherein, the shell is provided with a chamber extending outwards from the bottle mouth, a side wall of the chamber is provided with a water outlet and a switch controlling the water outlet, the bottle cap is articulated with the side wall, the switch comprises a baffle pivoted to the side wall and used for enclosing the water outlet and a bottle stopper contact, and the bottle stopper contact extends inside the chamber. Compared with the existing thermos bottle, the thermos bottle realizes the function of pouring boiled water without removing the bottle cap and the bottle stopper, thus simplifying operation and ensuring convenient use. In addition, the thermos bottle according to the invention has the advantages that the bottle mouth is not easily polluted and the appearance looks beautiful as the bottle cap and the shell are combined together.