Water pick

The water pick comprises a pump shell, a water inlet component, a water outlet component and a sealing piece, the pump shell is provided with a first assembling part and a second assembling part, the water outlet end of the water inlet component is arranged on the first assembling part in a penetrating mode, and an outlet of the water inlet component is communicated with an inlet of the pump shell. The water inlet end of the water outlet component penetrates through the second assembly part, and an inlet of the water outlet component is communicated with an outlet of the pump shell; the oral irrigator further at least comprises one of the following technical characteristics: i) the sealing element comprises a first sealing element, the first sealing element comprises a first sealing part and a first non-return part, the first sealing part is sleeved between the outer side wall of the water outlet end of the water inlet component and the inner side wall of the first assembly part, and the first non-return part