Water pump with self-suction device

The invention discloses a water pump with a self-suction device. The water pump with the self-suction device comprises a pump body and the self-suction device, the self-suction device is used for pumping air in an inner cavity of the pump body, a one-way air inlet valve is arranged at an air suction port of the self-suction device, an air inlet of the one-way air inlet valve is in communication with the inner cavity of the pump body, an inductive switch is arranged on the self-suction device, and the inductive switch is in communication with the inner cavity of the pump body. When the water pump needs to be used, the air inside the pump body is pumped away through the self-suction device, so that the interior of the pump body is gradually converted into a vacuum state, and thus, the pump body can directly pump water into a pump cavity during operation; the air inside the pump body is automatically pumped away through the self-suction device to replace filling water into the pump body, so that the operation is