The utility model relates to a portable water bottle with a hook, which is characterized in that: the portable water bottle is composed of a water bottle and a hook 3; the water bottle comprises a bottle body 1 and a bottle cover 6; the bottle cover 6 is provided with internal threads; the bottle body 1 has a cylindrical structure; the upper curve shrinks and forms a bottle opening 5; a curve area between the bottle opening 5 and the bottle body 1 is a bottle neck 2; a position limiting projection 4 is provided at a transition part between the bottle opening 5 and the bottle neck 2; the bottle opening 5 is provided with external threads; the hook 3 is fixed below the position limiting projection 4; the inner diameter at the connection part is slightly larger than the outer diameter of the bottle opening 5; and the hook can rotate around the position limiting projection. According to the utility model, the hook 3 is added on the structure of a traditional water bottle. When the hand is required for performing other action, the portable water bottle can be hanged on a pocket or a satchel. The portable water bottle with hook further has the following advantages: simple structure, high convenience and wide applicability.