The invention discloses a micro water pump, which comprises a motor, a casing body, an
impeller and an end cover. Outward convex
flange and dummy club are arranged on an inner wall of the casing body, a water outlet opening is arranged on the outer wall of the casing body along the tangent direction, a
water level hole parallel to the end surface of the casing body and positioned above the water outlet opening is arranged on the circumferential wall of the casing body, and the lower edge of the
water level hole is flush with the upper edge of the dummy club; the
impeller is composed of an
impeller shaft, a
chassis and a plurality of blades of an integral structure, the impeller shaft is positioned above the
chassis, the blades are uniformly distributed below the
chassis, and a plurality of air vents are arranged on the chassis; a cavity is arranged in the end cover, and a central hole is arranged on the end surface of the water pump; the motor, the impeller and the end cover are arranged in the cavity, wherein, a
motor shaft is positioned in the impeller shaft and is tightly fitted, the chassis and the blades of the impeller are positioned between the dummy club of the casing body and the end surface of the end cover, and the impeller, the casing body and the end cover are not contacted; the cavities formed among the water outlet opening, the dummy club and the end cover are communicated. The invention has the advantages that the structure is simple, the sealing element is not required, the service life is long, and the
noise is low.