Water pick

The utility model provides an oral irrigator, which relates to the technical field of small household appliances, and comprises a main body, a battery and an integrally formed first shell, a containing cavity with an opening in one end is formed in the first shell, and the opening end of the first shell is connected with the main body; a mounting groove is formed in the side wall of the containing cavity, one end of the mounting groove is communicated with the open end of the containing cavity, and the battery is arranged in the mounting groove. By arranging the mounting groove of which one end is communicated with the open end of the accommodating cavity, one end of the battery is aligned with the mounting groove in the process of mounting the battery, and then the battery is directly pushed into the mounting groove. Meanwhile, due to the fact that the machine shell is integrally formed, the machine shell does not need to be welded, production efficiency is high, and water cannot enter the machine shell from